Assuring the quality of results of test hardness IRHD: IPT's case study

3rd International Congress on Mechanical Metrology

物理学;力学

Yojo, T.^1,2 ; Miranda, M.J.A.C.^1,2 ; Oliveira, C.B.^1,2 ; Matteucci, C.^1,3

IPT- Institute for Technological Research, Cidade Universitária, Av. Prof. Almeida Prado, 532, Sao Paulo, SP

CEP 05508-901, Brazil^1

LAMM -Trees, Woods and Furniture Laboratory, Cidade Universitária, Av. Prof. Almeida Prado, 532, Sao Paulo, SP

CEP 05508-901, Brazil^2

GGQ - Quality Administration Management, Cidade Universitária, Av. Prof. Almeida Prado, 532, Sao Paulo, SP

CEP 05508-901, Brazil^3

关键词: Calibration network;    Certified reference materials;    Direct readings;    International standards;    Quality of results;    Test hardness;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/648/1/012001/pdf
DOI  :  10.1088/1742-6596/648/1/012001

学科分类：力学，机械学

来源: IOP

【 摘 要 】

This paper presents the experience of the Laboratory Trees, Woods and Furniture - LAMM in calibrating the durometer IRHD and assuring the quality of its test results, since there are no Certified Reference Material and laboratory in the Brazilian Calibration Network that can calibrate the equipment. To solve this problem, the IRHD hardness (N method) was quantified in three ways: a) by measuring the modulus of elasticity of the material, b) by measuring the depth the sphere entered the material and c) the durometer's direct reading. With the IRHD hardness measured by accepted international standards techniques, it was possible to evaluate the accuracy of the test results that assured the calibration of the equipment.