title: Active thermography in qualitative evaluation of protective materials.
abstract: This is a study of the possibilities of a qualitative evaluation of protective materials with active thermography. It presents a simulation of a periodic excitation of a multilayer composite material. Tests were conducted with lock-in thermography on Kevlar composite consisting of 16 layers of Kevlar fabric reinforced with formaldehyde resin with implanted delamination defects. Lock-in thermography is a versatile tool for nondestructive evaluation. It is a fast, remote and nondestructive procedure. Hence, it was used to detect delaminations in the composite structure of materials used in the production of components designed for personal protection. This method directly contributes to an improvement in safety.
authors.affiliation: Department of Personal Protective Equipment, Central Institute for Labour Protection - National Research Institute, Łódź, Poland. grgra@ciop.lodz.pl
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Gralewicz
authors.forename: Bogusław
authors.initials: B
authors.lastname: Wiecek
mesh_terms: D003198:Computer Simulation; D004868:Equipment Failure; D006801:Humans; D011108:Polymers / Q000032:analysis*; D011481:Protective Clothing; D013784:Textiles / Q000032:analysis*; D013817:Thermography
chemical_list: C039578:Kevlar Aramid fibers; D011108:Polymers