🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiРусскийالعربيةفارسی日本語EntityQ20820497· pop 11· linked from 19 articlesnotchAlso known as V-Notch, U-Notch, notcheddeliberately introduced defect in a planar material whereby stress is concentratedAvailable in 11 languagesEspañolFrançaisDeutschРусскийItalianoCatalanEsperantoPolskiSicilianفارسیvia Wikidata sitelinks · CC0Connectionscharpy impact testEntitydigital object identifierEntityCategoriesCommons link is locally definedFracture mechanics