An Innovative Improvement on Standard Testing Procedure for Biomaterials under Uniaxial Tension

摘要

Numbers of standard testing procedure are available for quality control to produce reliable test results. Nevertheless, there are always areas for improvement to the existing standards. This paper for the first time introduces and assesses the use of additional marker (pin) as an alternative measuring points. This innovative idea is hoped to improve the standard testing procedure (ASTM Standard D2209-00), which covers the uniaxial tensile test for leather. Initial work includes preparing samples (Dogbone shape) according to standard. The standard testing procedure is carried out twice. The first test (stage 1) was according to the original standard and the second test (Stage 2 - modified protocol) includes several initial attempts to attach the marker pins at the optimum location. Adjustments are made to ensure the marker pins attached firmly to the sample material before standard measurement of displacement and strains using the common testile test machine. Tension test, generating result (Displacement and Strain). The results for both original and modifies procedure are compared. It is found that the modified procedure reduced the variation in displacement and strain measurement. By comparison, a significant reduction (63.57%) of range difference between modified and original is computed. This proves that the current modification is significant and produce better results than the original procedure, which could be beneficial for future research especially in biomaterials engineering.