UNSPECIFIED (2004) Fast mapping polyamide mechanical properties using energy approach by TPM. In: 3rd International Symposium on Instrumentation Science and Technology, Xian, PEOPLES R CHINA, AUG 18-22, 2004. Published in: PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY, VOL 3 pp. 310-315.

Abstract

In a conventional nano-indentation test, the contact force is gradually increased to a pre-defined maximum value, held for a certain amount of time (dwelling time) to allow a full penetration, and then decreased back to its initial value. However, in the multi-function measurement by TPM, a fast scanning rate is necessary to reduce the total measurement time. Thus there is no dwelling time during the indentation process at each of surface points. To determine the mechanical properties of a material by means of indentation curves, we present a new approach by combining Marten hardness with the energy method for calculating Young's modulus. The method was tested on two samples and compared with the method proposed by Oliver-Pharr. The results show that the proposed method is reliable and effective for processing indentation data with significant creeping effect.

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