<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31436628</termId><termName>fracture mechanics</termName><termType>PT</termType><termNote><![CDATA[ Branch of mechanics which studies the generation of cracks in materials using methods of analytical and experimental mechanics. ]]></termNote><termCreatedDate>2026-03-30 20:57:44</termCreatedDate><relation><relationType>UF</relationType><termId>31436629</termId><termName>mechanics, fracture</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31410642</termId><termName>mechanics</termName><termType>PT</termType></relation></term>  </Zthes>