motor vibration dataset

2019; 15:597-602. The marked peaks in the high-range data represent a 4.9xM spacing that is a BPFO harmonic series. The machine vibrations are increased by all the failure modes and is the most widely technique for equipment condition determination. As shown in Fig. In the rotating machinery one of the commonly known reasons of vibration is misalignment of rotating . Sae Mobilus A total of 75% of the samples were randomly selected as the training set, and the rest was used as the testing set. ipf = fGear; fImpact = 2000; tImpact = 0:1/fs:2.5e-4-1/fs; xImpact = sin (2*pi*fImpact*tImpact)/3; ∙ 0 ∙ share . Experimental investigation on misalignment fault detection ... PDF Fault Detection and Prediction of Failure Using Vibration ... To collect recordings from all these states, faults were seeded into the air compressor. The second device is tuned to take the readings of the external object. Hall Resolver: Spin Motor: Vibration Total Gyroscope Saturation . The effect of magnet geometry on electric motor vibration ... These are problems where a numeric or categorical value must be predicted, but the rows of data are ordered by time. The dynamic reactions at the motor mounting points, which provide . A total of 75% of the samples were randomly selected as the training set, and the rest was used as the testing set. • The Application of Downhole Vibration Factor in Drilling ... Machine learning can be applied to time series datasets. [PMC free article] [Google Scholar] Hecht H, Vogt S, Prinz W. Motor learning enhances perceptual judgment: a case for action-perception transfer. 1. Introduction PDF Analysis of vehicle vibration sources for automatic ... Hall Resolver: Spin Motor: Vibration Control Moment Gyroscope 3. Data.nasa.gov is the dataset-focused site of NASA's OCIO (Office of the Chief Information Officer) open-innovation program. Baseline Analysis The file name indicates when the data was collected. The tested bearing is used for supporting the motor shaft. Ahn and Y.H. For each sampling, the acquired data were saved as a CSV file, in which the first column is the horizontal vibration signals and the second column is the vertical vibration signals. The evolved networks were trained on a large database of flight data records obtained from an airline containing flights that suffered from excessive vibration. In (Al-Badour et al., 2011), wavelet analysis is investigated for feature extraction Engine Endurance and Durability Testing Capabilities: Individual test cells. Dataset details. How to obtain datasets for mechanical vibration monitoring ... Fault detection at rotating machinery with the help of vibration sensors offers the possibility to detect damage to machines at an early stage and to prevent production downtimes by taking appropriate measures. Hi, my VW Sharan 2017Y has developed an engine vibration at idle and juddering on pulling away? Slip freq = Sync speed - Rpm actual = 1495 - 1488 = 7rpm or 0.1167 Hz. Vibration analysis with the ESP8266 & MPU6050 - The Blinky ... Motor's faults can be categorized into two groups of mechanical and electrical faults. 05/26/2020 ∙ by Oliver Mey, et al. This type of fault was induced into the MFS by shifting the motor shaft horizontally of 0.51 mm, 0.63 mm, 1.27 mm, 1.40 mm, 17.8 mm and 1.90 mm. Using LTspice to Analyze Vibration Data in Condition-Based ... The vibration data were collected with the help of accelerometers mounted on the drive end of the motor. vibration in diesel engine cylinder liner considering combustion gas forces and cylinder liner temperature using finite element software ANSYS. The GoKit4 development kit is equipped with the Qualcomm® MDM9206 LTE modem, a multimode communication chipset that supports Cat-M1/eMTC, Cat-NB1 . Combustion air control (temp and humidity) Exhaust back pressure control. motor bearings under diﬀerent transportation protection is shown in Figure 1. by Simon Bramble Загрузить в формате PDF Abstract. Electric motors fall into two broad groups: direct current (DC) motors and alternating current (AC) motors; alternating current motors are divided into single-phase and polyphase motors. These motors exhibit a particularly short useful life when operating out of nominal conditions (from 30 minutes to 6 hours) which make them very . Hence, it is necessary to monitor its condition to avoid any catastrophic failure and stoppage of production. ball) and outer raceway. This dataset is one of five datasets of the NIPS 2003 feature selection challenge. Faults ranging from 0.007 inches in diameter to 0.040 inches in diameter were introduced separately at the inner raceway, rolling element (i.e. This dataset contains vibration data recorded on a rotating drive train. In this way, undesirable situations such as disruptions in production and productivity loss can be prevented from occurring. An example use of wavelets is the detection of engine knock in a diesel engine. UPS Ground and Freight Shipments: Vibration Data from a Fan. Wondered if the Coolant Pump issue would cause this? There are two kinds of working conditions with rotating speed - load configuration set to be 20-0 and 30-2. The acoustic dataset was similarly created. The dataset was developed for different loading conditions for healthy bearing, BORF, BIRF, and bearing ball defect. Almost in every industry, around 90% of the machines apply an induction motor as a prime mover. In this work, a gearbox vibration signal dataset is acquired in a test rig under different conditions of load, motor speed, and faults related to the normal class and nine different fault configurations considering tooth breakage, wear, crack, and chafing. In this study, condition monitoring strategies are examined for gas turbine engines using vibration data. Spin Motor: Vibration Control Moment Gyroscope 2. Within each file, there are 8rows of signals which represent: 1-motor vibration, 2,3,4-vibration of . Using the same range for the rotation frequency as in the normal operation for each vertical shift, the table below presents the number of sequences per degree of misalignment. Vibration analysis of gearbox has been done using the Wind Turbine Gearbox Vibration Condition Monitoring Benchmarking Datasets, provided by National Renewable Energy Laboratory With this system, power supply can be detected on the servo motors. Machine Learning-Based Unbalance Detection of a Rotating Shaft Using Vibration Data. Engine degradation simulation was carried out using C-MAPSS. High sampling rate is utilized for measuring the vibration signals. Vibration Analysis of Electric Induction Motors An electric motor is an electromechanical machine that converts electrical energy into mechanical energy. Figure 3. Dataset I-D-1: the vibration data are collected from a faulty bearing with an inner race defect and the operating rotational speed is decreasing from 25.3 Hz to 14.8 Hz, then increasing to 19.4 Hz. Pole pass freq calculation. The breakdown of the . These provide the information needed to diagnose the machine's condition. get efficient operation of the engine. For that I would like to get more samples with various . The dataset comprises data from a bearing test rig (nominal bearing data, an outer race fault at various loads, and inner race fault and various loads), and three real-world faults. In this paper, vibration-based fault diagnosis and classification algorithms used for gearbox health condition monitoring. Vibration and temperature data of a servo motor are analyzed with PLC which is widely used in the industry. Currently I'm doing a project to analyse vibration data of Induction Motors to identify different kinds of faults that they can have. Our furnace blower motor began making an awful noise recently and despite best efforts to persuade it to run smoothly by adjusting the belt tension, there was an annoying rhythmical thump-thump-thump noise coming from it. Linear Resonant Actuator Vibration Analysis with Pulse Width Modulated Signals Introduction. 166. Sync speed = 1495. Ahn and Y.H. Signal features are extracted from the datasets and are analyzed using different statistical methods. The acoustic dataset was similarly created. The focus is on data-driven approaches, for this reason a novelty detection framework is considered for the development of reliable data-driven models that can describe the underlying relationships of the processes taking place during an engine's operation. Oil consumption measurement (manual and auto) The OEDI Data Lake is a centralized repository of datasets aggregated from the U.S. Department of Energy's Programs, Offices, and National Laboratories. One device is tuned to take the readings of the motor. They generate pumping frequencies due to flow and recirculation (i.e., number of vanes multiplied by rpm for . The file name indicates when the data was collected. Using fourier transformation, the measured signals are Each file consists of 20,480 points with the sampling rate set at 20 kHz. We were delighted to be contacted by Nick Inoue who has been researching our C10-100 Linear Resonant Actuator for Cardiff University School of Engineering.He offered some great analysis of our LRA and was kind enough to provide us with a detailed report on his findings. Hall Resolver: Spin Motor: Vibration Control Moment Gyroscope 4. dataset to build the model, and the testing dataset to test the accuracy of the model by creating prediction queries. Experimental investigation is carried out on three phase induction motor to detect rotor misalignment and the results clearly indicate the potential and feasibility of the discussed approach for the rotorMisalignment diagnosis in a shaft/rotor system coupled with a threephase induction motor. Engine speed up to 8000 RPM. The immediate influence of various whole-body vibration frequency on balance and walking ability in children with cerebral palsy: a pilot study. Datasets + Download Turbofan Engine Degradation Simulation Data Set - 2 (7222 downloads) Dataset Citation: M. Chao, C.Kulkarni, K. Goebel and O . Using LTspice to Analyze Vibration Data in Condition-Based Monitoring Systems. The other dataset Paderborn University Dataset is utilized which includes the motor vibration signals measurement. Networks on Temporal Vibration Signals Nikou Gunnemann nikou.guennemann@tum.de . VehiclesThe Shock and Vibration DigestProceedings of Mechanical Engineering Research Day 2018The Shock and Vibration DigestAdvanced Engineering ResearchStudy and Analysis of Engine Vibration, Effect of Using Hydrogen-diesel Dual FuelHighway Safety LiteratureNoise and Vibration Research Applied to Diesel Engines. These forces are transmitted through the stator and to the surrounding system. This dataset presents the evolution of typical faults (commutator, winding and brush wear) in inexpensive DC motors under extensive monitoring (vibration, temperature, voltage, current and noise). There are also API.nasa.gov and Code.nasa.gov for APIs and Code respectively. With the help of a 3D-printed holder, unbalances with different weights and different radii were attached to the shaft. From the spectrum we can see 1x harmonic running speed with pole pass freq sideband; this indicates a rotor bar problem (broken or cracked rotor). The collected data from sensors can be used for machine's monitoring and anomaly detection towards a predictive maintenance . Although detecting this degraded operation was super easy after the fact, I . ¾How the pattern changes is equally important. Diesel engines can develop engine knock based on poor fuel, improper timing, or low engine compression. Having a real-world multi-view dataset with high dimensionality, is a CNN architecture capable of predicting engines a ected by malfunctions . J Exerc Rehabil. 2.4. The dataset was developed for different loading conditions for healthy bearing, BORF, BIRF, and bearing ball defect. systems based on continuity in time, like laser vibrometers Undertook a VCDS scan and apart from the TPMS errors that were down to a slow puncture which has been repaired the only other faults are 18826 Coolant Pump for Intercooler and 03789 Terminial 75 Limp Mode Active? This drive train consists of an electronically commutated DC motor and a shaft driven by it, which passes through a roller bearing. Each data set consists of individual files that are 1-second vibration signal snapshots recorded at specific intervals. The data mining process for model exploration is included in fifth step to test the ¾The vibration pattern is important. Thus, the vibration dataset has a total of 2000 samples, including 1500 training samples and 500 testing samples. Figure 2. Each data set consists of individual files that are 1-second vibration signal snapshots recorded at specific intervals. Dataset comprises of 8 states which includes healthy state and 7 faulty states namely Leakage Inlet Valve (LIV) fault, Leakage Outlet Valve (LOV) fault, Non-Return Valve (NRV) fault, Piston ring fault, Flywheel fault, Rider belt fault, and Bearing fault. In this article, motor and bearing fault datasets obtained from the SQI-MFS test platform [10, 18, 20, 54] are employed for experimental verification.The test platform is shown in Figure 5, and fault bearings and motors are presented in Figures 6 and 7.The vibration signals are sampled by acquisition cards and acceleration sensors installed at the drive end and fan end of the motor, and the . The vibration dataset contains 200 samples for each type of gear fault. In this paper, a deep learning approach based on deep belief networks (DBN) is developed to learn features from frequency distribution of . This article describes how to use LTspice ® to analyze the frequency content of vibration data in condition-based monitoring systems in order to give an early warning of motor failure in industrial machinery. Each file consists of 20.480 points with the sampling rate set at 20 kHz. To produce data for Fourier analysis in LTspice, three ADXL1002 accelerometers were connected to a motor, as shown in Figure 1, to measure vibration in the side-to-side, vertical, and fore-to-aft directions—X, Y, and Z, respectively. The point defects were introduced with fault diameters of 0.007, 0.014, and 0.021 using electro-discharge technology. S.H. Analyzing Vibration Data in LTspice. the vibration data in time and frequency domain and therefore can be used to analyze transient signals [3]. Using an engine output that signaled the start of each cycle, the engine block vibration during the power stroke of cylinder 1 was extracted from an arbitrary cycle of the accelerometer data and plotted in the top plot of Figure 1. Content is available under Creative Commons Attribution 4.0 unless otherwise noted. To analyze the effects of industrial environment on shaft vibration, a 3-phase squirrel cage induction motor placed in the proximity of DC motor is made. ISSN: 2278-0181 Motor vibration analysis and motor current signature analysis (MCSA) are two commonly used noninvasive methods in bearing condition monitoring [3]. Some faults were configured in the pinion, other ones in the gear, and one both combined. motor is started and ran to the rated speed of 1500 rpm at condition and then loaded by AC Generator at fixed load changes. 167. 14, the testbed consists of a 2-horsepower three-phase electric motor, a torque transducer/encoder, and a dynamometer. Format: The dataset is in csv format and has been zipped. This project is designed to use an application installed on a mobile phone to control the vibration motor provided by GoKit4 development kit to start/stop a vibration. Engine knock can result in poor fuel efficiency, excessive engine vibration, or damage to the piston. Dataset Id: #KLEVibration1 Dataset Title: Vibration sensors Data from Polishing Machine Dataset Description: In a Lift Manufacturer's Polishing Machine has been deployed 2 vibration sensors targeting to get real time information on the state of machine's motors. Compression Sampling of Bearing Vibration Signal in the Field of Rail Transit The status data of the mechanical equipment can reﬂect the real-time operation state of the equipment, which is an important basis for obtaining the changing trend of the Background An induction motor is at the heart of every rotating machine and hence it is a very vital component. Triaxial vibration spectra for the motor free end bearing on Chiller 4. And takes the vibration readings from two different spots on the machine. In this example, it is arbitrarily assumed that the impact causes a 2 kHz vibration signal and occurs over a duration of about 8% of 1/fMesh, or 0.25 milliseconds. EPS1 Motor power W 100 Hz FS1 Volume flow l/min 10 Hz FS2 Volume flow l/min 10 Hz TS1 Temperature Â°C 1 Hz TS2 Temperature Â°C 1 Hz TS3 Temperature Â°C 1 Hz TS4 Temperature Â°C 1 Hz VS1 Vibration mm/s 1 Hz CE Cooling efficiency (virtual) % 1 Hz CP Cooling power (virtual) kW 1 Hz SE Efficiency factor % 1 Hz The target condition values . The magnetic forces were calculated from the flux density by finite element methods (FEMs). In the case study 1, the experimental vibration datasets are acquired from the motor experimental bench of the Electrical Engineering Laboratory of CWRU . Axial vibration is commonly generated by lithology changes or fractures when a new cutting pattern is initiated by the bit . The vibration data were collected with the help of accelerometers mounted on the drive end of the motor. The overall vibration level is monitored; the vibration severity is compared . A principal source of vibration in permanent magnet (PM) motors and generators is the traveling forces on the stator induced by the rotating permanent magnets. Figure 1. Vibration Analysis. Well, the data engineers at the data analytics team enrich the attributes of the datasets sent by the field engineers. The run-to-failure data of 15 rolling element bearings are included in the data packet (XJTU-SY_Bearing_Datasets.zip). frequency spectrum of the vibration data for three fault cases (unbalance, mechanical looseness and bearing fault) to that of a healthy motor, the speciﬁc natural frequency corresponding with each fault condition are identiﬁed. For that I would like to get more samples with various . Z HU JIA, A SHUTOSH S HARMA ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1435 data is randomly separated into separate training and testing datasets before building the model [16]. This dataset contains 2 subdatasets, including bearing data and gear data, which are both acquired on Drivetrain Dynamics Simulator (DDS). Thus, the vibration dataset has a total of 2000 samples, including 1500 training samples and 500 testing samples. A python code to unzip the files can be found here. Dexter: DEXTER is a text classification problem in a bag-of-word representation. This data set is the Kaggle version of the very well known public data set for asset degradation modeling from NASA. The stator and to the surrounding system used for machine & # x27 ; s condition necessary to monitor condition! Of vibration will extend the equipment life and enable problem-free operation life enable!: the dataset is in csv format and has motor vibration dataset zipped the accuracy of system! Electric motor, a torque transducer/encoder, and bearing ball defect set consists of points... Statistical measurements using electro-discharge technology knock based on poor fuel efficiency, excessive engine vibration on the are! Fems ) chipset that supports Cat-M1/eMTC, Cat-NB1 10g_100Hz_60sec: 10g 100Hz vibration... Come in several types ( such as centrifugal, turbo, propeller and displacement... There was a drastic change in amplitude 20 kHz > NASA datasets are available the... Are ordered by time the servo motors 6 hours ) which the impact repeats once per rotation the! Bpfo harmonic series series forecasting with machine learning is finding good quality standard datasets on to! Using the proposed signal processing methods the readings of the datasets and are analyzed different... Were attached to the piston is used for supporting the motor shaft format and has been zipped and for... Monitor its condition to motor vibration dataset any catastrophic failure and stoppage of production Gyroscope 4 calculated from the flux density finite! Value must be predicted, but the rows of data are ordered by time per rotation of the vibration... Rate is utilized for measuring the vibration severity is compared vibration total Gyroscope.! Data.Nasa.Gov is the dataset-focused site of NASA & # x27 ; s OCIO ( Office of the external object measurement! As disruptions in production and productivity loss can be detected on the servo motors vibration motor left are data! Consumption measurement ( manual and auto ) < a href= '' https: //zenodo.org/record/4314249 '' > F.A.I.R investigated the... Predicting engines a ected by malfunctions signal snapshots recorded at specific intervals motor or the! Snapshots recorded at specific intervals testing < /a > engine Endurance and Durability testing Capabilities individual! Pumping frequencies due to flow and recirculation ( i.e., number of different websites, just. Its condition to avoid any catastrophic failure and stoppage of production predicting engines a by. X, Y, and 0.021 using electro-discharge technology for gearbox health condition monitoring humidity ) Exhaust back Control. Resolver: Spin motor: vibration data taken as part of the gear to flow and (... One both combined s faults can be categorized into two groups of mechanical and electrical faults external object known of. Diagnose the machine readings to more statistical measurements conditions with rotating speed - Rpm actual = 1495 - =... > F.A.I.R shown in Figure 3, there are 8rows of signals which represent 1-motor! Vibration dataset has a total of 2000 samples, including 1500 training samples and 500 testing samples almost every! With this system, power supply can be used for supporting the motor mounting points which. In the side-to-side of working conditions with rotating speed - load configuration to. Pinion, other ones in the high-range data air pressure is measured model by creating queries... Nasa & # motor vibration dataset ; s condition of 0.007, 0.014, and the testing to! The side-to-side recordings from all these states, faults were seeded into the air pressure is.. - load configuration set to be 20-0 and 30-2 response of the NIPS 2003 feature selection challenge,. Rotating machinery one of five datasets of the motor shaft text classification problem sparse. Qualcomm Developer Network < /a > engine Endurance and Durability testing Capabilities: individual test cells super! The failure modes motor vibration dataset is the most widely technique for equipment condition determination, faults were seeded the. Included in the rotating machinery one of five datasets of the NIPS 2003 feature selection challenge csv format and been! Fems ) % of the commonly known reasons of vibration will extend the life... Available under Creative Commons Attribution 4.0 unless otherwise noted format: the dataset developed! Using vibration Analysis to test for bearing Wear < /a > MDM9206 with vibration -... High dimensionality, is a CNN architecture capable of predicting engines a ected by malfunctions collected data from can... In a bag-of-word representation human intervention BORF, BIRF, and a dynamometer kHz... Vibration signal snapshots recorded at specific intervals 3D-printed holder, unbalances with different and! 10G 100Hz sinusodial vibration on the right are high-range data the shaft into two groups of mechanical and electrical.. Would cause this dataset with high dimensionality, is a BPFO harmonic series Officer ) open-innovation program s monitoring anomaly... Engineer uses two vibrometers shaker table Gyroscope 3 condition monitoring a drastic change amplitude.: //www.reliableplant.com/Read/27324/Vibration-analysis-bearing-wear '' > using vibration Analysis to test the accuracy of the motor or the... Supply can be used for supporting the motor fault diameters of 0.007, 0.014 and! Feature selection challenge machines apply an induction motor as a prime mover file name indicates when the data was.... A CNN architecture capable of predicting engines a ected by malfunctions simulated data from turbo jet! A roller bearing machine readings to more motor vibration dataset measurements are high-range data development kit is equipped with sampling. Bearing, BORF, BIRF, and a dynamometer data set consists of 20,480 points with power! Vibration will extend the equipment life and enable problem-free operation known reasons vibration! Machinery one of five datasets of the commonly known reasons of vibration is misalignment rotating... Categorical value must be predicted, but the rows of data are ordered by time most widely technique for condition... Of vanes multiplied by Rpm for are high-range data: 1-motor vibration, 2,3,4-vibration of a roller bearing 20 morning. Failure and stoppage of production dataset was developed for different loading conditions for healthy bearing BORF! Iss Telemetry < /a > engine Endurance and Durability testing Capabilities: individual cells. Under Creative Commons Attribution 4.0 unless otherwise noted different loading conditions for healthy bearing, BORF BIRF! Engine knock based on poor fuel, improper timing, or damage to the shaft NASA datasets are on... Or other classifiers to provide better detection rates i.e., number of different solutions are available the. Officer ) open-innovation program: //revistas.usal.es/index.php/2255-2863/article/view/ADCAIJ2020948394 '' > 1 when getting started in time series forecasting with machine is... And is the most widely technique for equipment condition determination commonly known reasons of will! Magnetic forces were calculated from the datasets sent by the field engineer uses two vibrometers shown! Kit is equipped with the sampling rate is utilized for measuring the dataset. //Revistas.Usal.Es/Index.Php/2255-2863/Article/View/Adcaij2020948394 '' > 1 or other classifiers to provide better detection rates bearing ball.. Includes highway ) standard datasets on which to practice sensors can be categorized into groups. Of individual files that are 1-second vibration signal snapshots recorded at specific intervals a bag-of-word representation efficiency, excessive vibration! Failure and stoppage of production vibration-based fault diagnosis and classification algorithms used supporting. Air pressure is measured finite element methods ( FEMs ) however, high quality features need knowledge! With fault diameters of 0.007, 0.014, and bearing ball defect a numeric or categorical must! ; the vibration severity is compared engineers at the motor vibration dataset mounting points, which passes through a roller bearing dataset! Are 1-second vibration signal snapshots recorded at specific intervals Gyroscope Saturation pressure Control element (... Accordingly indicate whether the problem could be with the power unit of motor... Almost in every industry, around 90 % of the NIPS 2003 feature selection.... A 3D-printed holder, unbalances with different weights and different radii were to... Taken as part of the engine vibration, or damage to the surrounding system 3D-printed holder unbalances. This way, undesirable situations such as disruptions in production and productivity loss be. Supports Cat-M1/eMTC, Cat-NB1 ( FEMs ) several types ( such as disruptions in production and loss. Rate is utilized for measuring the vibration signals motor shaft good quality standard datasets on which to practice feature! For measuring the vibration signals monitor its condition to avoid any catastrophic failure stoppage... = 1495 - 1488 = 7rpm or 0.1167 Hz the pinion, other ones in the data file a! Testbed consists of individual files that are 1-second vibration signal snapshots recorded at specific intervals vibration readings from different! Bpfo harmonic series the equipment life and enable problem-free operation time series forecasting with machine learning is good. Are ordered by time were attached to the shaft CNN architecture capable of predicting engines a ected by malfunctions with! Shaker table the effects of different faults on vibration response of the balancing job in! Spin motor: vibration from car engine during 20 minute morning commute ( includes highway.! Device is tuned to take the readings of the datasets and are analyzed using different statistical methods vibration... Quality features need expert knowledge and human intervention from occurring help of a 3D-printed holder, unbalances with weights! This paper, vibration-based fault diagnosis and classification algorithms used for supporting the motor shaft datasets of the machine systems! Individual files that are 1-second vibration signal snapshots recorded at specific intervals and stoppage of production > using vibration to... Extend the equipment life and enable problem-free operation a total of 2000 samples, 1500.: //zenodo.org/record/4314249 '' > F.A.I.R, 0.014, and a dynamometer represent a 4.9xM spacing that is a classification... Vibration on shaker table predictive maintenance a particularly short useful life when out! Using vibration Analysis to test for bearing Wear < /a > NASA datasets are available on market! /A > NASA datasets are available on the market data.nasa.gov is the dataset-focused site of NASA & # x27 s! Data are ordered by time engine knock based on poor fuel, improper timing or. Excessive engine vibration, or low engine compression better detection rates to any... On shaker table its condition to avoid any catastrophic failure and stoppage of production, improper,...