Monday, May 12, 2014

Metallurgical and Composite Fatigue Testing in Mumbai, India

TCR Engineering Services ( based in Mhape, Navi Mumbai, India has state of the art closed loop servo hydraulic controlled universal testing machines of 25kN and 250kN capacity to conduct fatigue, fracture toughness and CTOD tests. image

1) Strain hardening exponent (n) of metallic materials can be determined as per ASTM E646.

2) Constant Amplitude Axial Fatigue tests of ductile materials can be conducted to obtain fatigue strength for 1 million cycles and more where strains are predominately elastic as per ASTM standard E466-2002. Customers need to indicate the type of specimen, wave from (sine / ramp / saw tooth etc.) and the frequency of test.

3) TCR can also undertake low cycle fatigue (strain controlled fatigue testing) to find out the fatigue strength coefficient and cyclic strength coefficient at a given strain and for total cycle to failure. The test can be conducted as per ASTM E606-2004.

TCR has also facility to fabricate specimens as per required standards.

TCR can also undertake composite testing for fatigue as per ISO 527–5 (Type A) (Axial tensile strength and modulus) & ISO 527–5 Type B (Transverse tensile strength and modulus). These standard pertains to Tensile test in longitudinal direction using type A or transverse direction using type B specimens. The specimens for these tests have to be machined in the required direction from the laminate and end tabs fixed as per the standards. The speed of the test will be specified as per ISO 527-1.

TCR also undertakes test as per ASTM D 6641 (Axial Compressive strength and modulus) as well as ASTM D 3479 (High cycle fatigue; f=2 to 5Hz; R=0.1).

Fatigue test on PMC can be conducted on specimen that is subjected to repetitive constant amplitude uni-axial in plane loading as per your frequency (2-5Hz) & stress ratio R=0.1 requirements. Customers must specify the wave form as well as the stress level at which the number of cycles to failure has to be found.

The fatigue charges at TCR depends on the usage of the machine time and is quoted on a per hour basis. Lump sum quotes can be given as well.

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