Automotive Testing
Automotive
Automotive sector is one of the major customers of SRI. Automobile testing at SRI is mainly concerned about testing of automobile components like engine parts, transmission parts, body parts, Chassis parts, plastic and rubber components, Flexible cellular parts and Coatings. Complete testing facilities for automobile components are available in SRI.
Engine Parts
Routine Tests:
- ➤ Chemical Analysis (IS 228, ASTM E351)
- ➤ Hardness Tests (ASTM E10, E384, C849)
- ➤ Microstructure Analysis (ASTM E1268, A 262, E 407)
- ➤ Impact Testing ( ASTM E23, A 327, E 1271, A 673, E 370, D256)
- ➤ Sulfur printing ( ASTM E 1180)
- ➤ Radiographic Testing ( ASTM E1030)
- ➤ Mechanical Testing ( ASTM A 370, E8)
- ➤ Decarburization depth ( ASTM E1077)
- ➤ Iron Castings Tests (ASTM A48, A 126, A159, A602)
Unique Tests:
- ➤ Failure Analysis,
- ➤ Fractography using Scanning Electron Analysis
- ➤ Grain size determination using X-ray Diffraction
- ➤ Salt spray tests
Transmission Parts
Routine Tests:
- ➤ Chemical Analysis
- ➤ Tensile Testing (ASTM E8)
- ➤ Mechanical Testing, Microstructures
- ➤ Case depth determination
- ➤ Microhardness testing
- ➤ Sulfur printing (ASTM E 1180)
- ➤ Macrostructure Testing
- ➤ Dye Penetrant Testing
- ➤ Pressure testing
Unique Tests:
☸ Radiography (ASTM E1030)
☸ Corrosion testing, Mineral Analysis
☸ Prototyping of heat treatment processes.
Auto Body Parts
Routine Tests:
- ➤ Coating thickness measurement by chemical analysis & by microsection method
- ➤ Mechanical Testing
- ➤ Chemical Analysis
- ➤ Eddy current testing
- ➤ Ultrasonic testing (ASTM A21, A609)
METHOD
- ➤ Bend testing
- ➤ Ericksen Cupping test
- ➤ Magnaflux testing
- ➤ Low alloy steel testing (ASTM A656)
- ➤ Auto Steel Bars ( ASTM A617, A 729)
Unique Tests:
☸ Atomic Absorption Spectroscopy
☸ Coating Thickness meters
☸ Reverse Engineering of Chemistry and Mechanical properties for unknown compositions
Chassis Parts
Routine Tests:
TEST DESCRIPTION
- ➤ Coating thickness measurement by chemical analysis & by microsection method
- ➤ Mechanical Testing
- ➤ Chemical Analysis
- ➤ Eddy current testing
- ➤ Ultrasonic testing
- ➤ Bend testing
- ➤ Ericksen Cupping test
- ➤ Magnaflux testing
- ➤ Steel sheet testing (ASTM A742, A653)
- ➤ Steel Castings (ASTM A47)
METHOD
- ➤ Copper Sand Castings ( ASTM B61, B62)
- ➤ Magnesium Alloys ( B 94)
- ➤ Aluminum Castings (B179)
- ➤ Die Casting parts (B 85)
- ➤ Fasteners( A 490, F 788)
- ➤ Washers ( ASTM F436)
- ➤ Tubes ( ASTM A 450, A254)
- ➤ Spring steel wire ( ASTM A764)
- ➤ Axle steel bars( ASTM A 617, A 729)
Unique Tests:
☸ Atomic Absorption Spectroscopy
☸ Coating Thickness meters
Plastic Components
Routine Tests
- ➤ Tensile Testing ( Tensile Strength, Elongation, Young's Modulus, Stress-strain studies) ASTM D 648
- ➤ Flexural test (Flexural Strength, Flexural modulus) ASTM D 790
- ➤ Hardness (Shore - D ASTM D 2240 , Rockwell ASTM D 785)
- ➤ Impact Tests ASTM D 256
- ➤ Heat Aging ASTM D 5510
- ➤ Environmental Stress Cracking (ESC)
- ➤ Specific Gravity ASTM D 792
- ➤ Water Absorption ASTM D 570
- ➤ Water Vapour Transmission ASTM E 96
- ➤ Optical properties
- ➤ Hazardous materials - Lead, Mercury, Cadmium etc
Unique Tests:
☸ Weathering Studies testing UV and Xenon arc - Weatherometer exposure to various intensities of radiation, Temperature cycles and Condensation cycles.
☸ Flammability of Plastic parts, Textiles, Films and Foam by ASTM and UL standards and various automobile standards
☸ Fogging Test for Interior automotive materials ASTM D 5393, SAE J1756, ISO 6452, DIN 75201
☸ Minimum oxygen concentration for combustion (Oxygen Index) ASTM D 2863
☸ Thermal Conductivity by guarded hot plate method ASTM C 177
Coatings
Routine Tests
- ➤ VOC (Volatile Organic Compound) ASTM D 5087
- ➤ Measurement of Gloss by goniophotometry ASTM E 430
- ➤ Viscosity of Paints and Related materials by ISO flow cups ASTM D 5125
- ➤ Coating thickness ASTM B 588, E 376, B 767, A 90
- ➤ Salt spray test ASTM B 117, G 85
Unique Tests
☸ Xenon arc exposure of paint ASTM D 6695
☸ Weathering studies on colour, reflectance etc
Flexible Cellular Parts
Routine Tests
- ➤ Indentation hardness Index (Load bearing properties) D3574
- ➤ Compressive strength D3574
- ➤ Tensile Strength D3574
- ➤ Compression Set D3574
- ➤ Humid and heat Age resistance D3574
Unique Tests
☸ Dynamic fatigue resistance D3574
☸ Flammability D 3675
Rubber Components
Routine Tests
- ➤ Tensile Testing (Tensile Strength, Elongation, Modulus) ASTM D 412
- ➤ Tear Resistance ASTM D 624
- ➤ Hardness (Shore A) ASTM D 2240
- ➤ Compression Set ASTM D 395
- ➤ Heat Aging in air
- ➤ Specific gravity
- ➤ Abrasion Resistance ASTM D 5963
- ➤ Tensile Strength and Elongation of V-belts
Unique Tests
- ➤ Effect of liquids (Various automobile fuels, lubricating oils, and coolants. Change in physical properties and volume can be studied) ASTM D 471
- ➤ Deterioration-Surface Ozone Cracking in a Chamber ASTM D 1149
- ➤ Rubber Property-Adhesion to Rigid and flexible Substrates ASTM D429-03.
- ➤ Hose (for air/vacuum brakes) testing ASTM D 622
- ➤ Rubber crack growth - DeMattia Flexing ASTM D 813
METHOD
- ➤ Brittleness temperature by Impact - ASTM D 746
- ➤ Cut growth resistance - ASTM D 3629
- ➤ Liner and cover adhesion of reinforced hose
- ➤ Oil resistance of hose
- ➤ Stress Relaxation tests