MECHANICAL TESTING

High Cycle Fatigue Testing Laboratory - ASTM E 466

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Touchstone is experienced in the performance of fatigue testing in almost every material system and at a wide variety of temperatures from cryogenic to over 2200 degrees Fahrenheit.

Machining methods and techniques can strongly influence the fatigue life of a material. Proper machining techniques prevent the introduction of stress risers or crack initiation sites. Touchstone is experienced in fatigue specimen preparation to comply with strict sample preparation requirements, including surface finish of the machined sample. This knowledge and care provides the most meaningful and best possible high cycle fatigue life results.

ASTM E466 conducts axial fatigue tests to obtain the fatigue strength of metallic materials in the fatigue regime where the strains are predominately elastic both upon initial loading and throughout the test.

The method is limited to the fatigue testing of axial unnotched and notched specimens subjected to constant amplitude, periodic forcing function in air at room temperature. This practice is not intended for application in axial fatigue tests of components or parts.

The ASTM E466 axial load fatigue test is used to determine the effect of variations in material, geometry, surface condition, stress, etc., on the fatigue resistance of metallic materials subjected to direct stress for relatively large number of cycles. The test may also be used as a guide to the selection of metallic materials for service under conditions of repeated direct stress.

Reference: ASTM E466 - Standard Test Method for Conducting Constant Amplitude Axial Fatigue Tests of Metallic Materials

Index of Mechanical Testing