Identification of Interparticle Contacts in Granular Media Using Mechanoluminescent Material

© Society for Experimental Mechanics, Inc. 2020. Mechanoluminescent powders are new materials that can be considered as intelligent, active or responsive because they have the property of emitting light when they are mechanically deformed. They open perspectives for the measurement of stresses in me...

全面介紹

Saved in:
書目詳細資料
Main Authors: Pawarut Jongchansitto, Damien Boyer, Itthichai Preechawuttipong, Xavier Balandraud
格式: Conference Proceeding
出版: 2020
主題:
在線閱讀:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85085477821&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/70599
標簽: 添加標簽
沒有標簽, 成為第一個標記此記錄!
機構: Chiang Mai University
實物特徵
總結:© Society for Experimental Mechanics, Inc. 2020. Mechanoluminescent powders are new materials that can be considered as intelligent, active or responsive because they have the property of emitting light when they are mechanically deformed. They open perspectives for the measurement of stresses in mechanical parts. The present study focused on the stress concentrations in granular materials. Granular systems are defined as a collection of particles whose macroscopic behavior depends on the contact forces at the local scale. Some techniques are available for measurements in the bulk, such as X-ray tomography combined with volumetric digital image correlation. An extensive literature also deals with two-dimensional approaches: optical photography combined with digital image correlation, photoelasticimetry, infrared thermography. Mechanoluminescent materials offer new possibilities for revealing contact force networks in granular materials. Epoxy resin and mechanoluminescent powder were mixed to prepare dumbbell-like specimens and cylinders. Dumbbell-like specimens were used for preliminary uniaxial tensile tests. Cylinders were used to prepare granular systems for confined compression tests. Homogeneous light emission was obtained in the former case, while light concentrations were evidenced in the latter case.