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| About Directorate |
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Introduction
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Testing Directorate is the premier directorate of RDSO undertaking design validations of all newly designed/modified rolling stock developed in-house or imported, employing the latest state-of-the-art data acquisition and analysis tools and techniques. Besides undertaking actual field trials, this directorate has three laboratories for conducting stationary tests as well.
The various tests and trials done by Testing Directorate can be broadly classified into Field Trials and Laboratory Tests. Field Trials are those trials which are conducted on newly designed prototypes and modified rolling stock, for assessing ride quality and ride comfort apart from Route proving runs, Brake trials and Coupler force trials to assess their behaviour in actual operating conditions. Testing Directorate has also been entrusted with carrying out periodic track monitoring runs on Rajdhani and Shatabdi routes.
Laboratory Tests are conducted on newly designed sub-assemblies and Rolling Stocks components as well as quality audit check for assessing the suitability by simulating service condition /field condition in three well equipped and modernised laboratories.
Well-qualified, fully trained and vastly experienced dedicated team of 11 officers and 52 mechanical and instrumentation supervisors of the Directorate are geared to meet the challenges posed in the field of testing of railway vehicles and their components.
The brief description of Field Trials and Three Laboratories is as follows:
FIELD TRIALS OF ROLLING STOCK:
Whenever a railway vehicle undergoes a modification or a new vehicle design is sought to be introduced, Field Trials are mandatory before the Commissioner of Railway Safety permits their introduction into the Railway system.
Testing Directorate has five field units to conduct various Field trials like Oscillation trials, Confirmatory oscillograph car runs, Track Monitoring runs, Brake trials of passenger & goods trains, Jerk trials, Emergency Brake trials, Coupler force measurement and Rating & Performance trials of locomotives.
IT INCLUDES FOLLOWING TRIALS:
- Oscillation trial
- Emergency Braking Distance trials
- Coupler Force and controllability
- Rating and Performance of locomotives
- Stress investigation of prototype shell of coach/wagon
- Regular track monitoring run
- Confirmatory oscillograph car run of loco/coach
LABORATORIES:
Three laboratories are
1. AIR BRAKE LAB
Following activities are done in Air Brake Lab
- Effects of changes in design of loco brake system on brake characteristics of passenger & freight trains
- Brake characteristics of freight & passenger trains with multiple loco operation
- optimum location of locos in long freight train
- Effect of changes in design of distributor valve on brake characteristics of freight & passenger trains
- Brake characteristics in case of train parting alarm chain pulling and guard van application
- Effects of leakage rates on release of brakes
- Effects of over charge feature on train operation
- Indication to driver in case of train parting
- Performance and endurance testing of distributor valve
- Performance testing of compressor of locomotive, EMU and DEMU
- Performance testing of MERVCD
- Calibration of pressure gauges, pressure transducers pressure recorder and other pressure Measuring instruments of brake lab and other units & labs of testing directorate and other directorates of rdso
2. BRAKE DYNAMOMETER LAB
Following activities are done in Brake Dynamometer Lab
- Mean and instantaneous coefficient of friction of brake blocks
- Specific wear rate of brake block/pads
- Maximum temperature attained by wheel and brake block/pads.
- Variation of Coefficient of friction with change in environmental conditions.
- Emission of smoke and odour during dyno testing in lab
3. FATIGUE TESTING LAB
Following activities are done in Fatigue Testing Lab
- structural strength test of new designs of structures like Bogie frames, Bolster, Brake Beam of railway rolling stock to check their design adequacy by simulating different service and exceptional load.
- Fatigue test of different components such as FRP sleepers , Rail Joints, Shock Absorbers etc. by simulating service loads
- Fatigue and load deflection test of different metal bonded rubber components such as Elastomeric pads for Casnub Bogie of wagons , Rubber Buffer Springs, PU Side Bearer pads, Loco Side Bearer pads, PU Side Bearer pads, Constant Contact Side bearer Pads by simulating service loads
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| About Directorate |
| |
|
Introduction
|
| |
Testing Directorate is the premier directorate of RDSO undertaking design validations of all newly designed/modified rolling stock developed in-house or imported, employing the latest state-of-the-art data acquisition and analysis tools and techniques. Besides undertaking actual field trials, this directorate has three laboratories for conducting stationary tests as well.
The various tests and trials done by Testing Directorate can be broadly classified into Field Trials and Laboratory Tests. Field Trials are those trials which are conducted on newly designed prototypes and modified rolling stock, for assessing ride quality and ride comfort apart from Route proving runs, Brake trials and Coupler force trials to assess their behaviour in actual operating conditions. Testing Directorate has also been entrusted with carrying out periodic track monitoring runs on Rajdhani and Shatabdi routes.
Laboratory Tests are conducted on newly designed sub-assemblies and Rolling Stocks components as well as quality audit check for assessing the suitability by simulating service condition /field condition in three well equipped and modernised laboratories.
Well-qualified, fully trained and vastly experienced dedicated team of 11 officers and 52 mechanical and instrumentation supervisors of the Directorate are geared to meet the challenges posed in the field of testing of railway vehicles and their components.
The brief description of Field Trials and Three Laboratories is as follows:
FIELD TRIALS OF ROLLING STOCK:
Whenever a railway vehicle undergoes a modification or a new vehicle design is sought to be introduced, Field Trials are mandatory before the Commissioner of Railway Safety permits their introduction into the Railway system.
Testing Directorate has five field units to conduct various Field trials like Oscillation trials, Confirmatory oscillograph car runs, Track Monitoring runs, Brake trials of passenger & goods trains, Jerk trials, Emergency Brake trials, Coupler force measurement and Rating & Performance trials of locomotives.
IT INCLUDES FOLLOWING TRIALS:
- Oscillation trial
- Emergency Braking Distance trials
- Coupler Force and controllability
- Rating and Performance of locomotives
- Stress investigation of prototype shell of coach/wagon
- Regular track monitoring run
- Confirmatory oscillograph car run of loco/coach
LABORATORIES:
Three laboratories are
1. AIR BRAKE LAB
Following activities are done in Air Brake Lab
- Effects of changes in design of loco brake system on brake characteristics of passenger & freight trains
- Brake characteristics of freight & passenger trains with multiple loco operation
- optimum location of locos in long freight train
- Effect of changes in design of distributor valve on brake characteristics of freight & passenger trains
- Brake characteristics in case of train parting alarm chain pulling and guard van application
- Effects of leakage rates on release of brakes
- Effects of over charge feature on train operation
- Indication to driver in case of train parting
- Performance and endurance testing of distributor valve
- Performance testing of compressor of locomotive, EMU and DEMU
- Performance testing of MERVCD
- Calibration of pressure gauges, pressure transducers pressure recorder and other pressure Measuring instruments of brake lab and other units & labs of testing directorate and other directorates of rdso
2. BRAKE DYNAMOMETER LAB
Following activities are done in Brake Dynamometer Lab
- Mean and instantaneous coefficient of friction of brake blocks
- Specific wear rate of brake block/pads
- Maximum temperature attained by wheel and brake block/pads.
- Variation of Coefficient of friction with change in environmental conditions.
- Emission of smoke and odour during dyno testing in lab
3. FATIGUE TESTING LAB
Following activities are done in Fatigue Testing Lab
- structural strength test of new designs of structures like Bogie frames, Bolster, Brake Beam of railway rolling stock to check their design adequacy by simulating different service and exceptional load.
- Fatigue test of different components such as FRP sleepers , Rail Joints, Shock Absorbers etc. by simulating service loads
- Fatigue and load deflection test of different metal bonded rubber components such as Elastomeric pads for Casnub Bogie of wagons , Rubber Buffer Springs, PU Side Bearer pads, Loco Side Bearer pads, PU Side Bearer pads, Constant Contact Side bearer Pads by simulating service loads
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Source : WELCOME TO RDSO CMS Team Last Reviewed on: 03-10-2011 
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