<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31308612</termId><termName>fatigue</termName><termType>PT</termType><termNote><![CDATA[ Condition of a material such as metal, paper, or fiber leading to failure due to repeated cyclic loading, such as folding, at a stress well below the material's normal tensile strength. ]]></termNote><termCreatedDate>2026-03-30 20:23:05</termCreatedDate><relation><relationType>BT</relationType><termId>31299874</termId><termName>strength of materials</termName><termType>PT</termType></relation></term>  </Zthes>