Abstract
A high temperature tensile experiment of modified random copolymerized polypropylene was carried out by ASTM D 638-2014. It analyzed the factors influencing the accuracy of the high temperature mechanical properties of modified random copolymer polypropylene and discussed the causes of the uncer-tainty of measurement standards from the sample size measurement, the indication error of force value of experiment machines, its calibration, data acquisition of the experimental software, the temperature control, the numerical correction, and the material nonuniformity, etc. According to JJF 1059.1-2012, class A and class B evaluation were conducted on the above-mentioned uncertainty components, and all the uncertainty components were synthesized. By analyzing the uncertainty of the measurement results, this paper provides a reference for evaluating the uncertainty of the same type of measurement results.
Export citation and abstract BibTeX RIS
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.