Uma amashubhu ensimbi angenamthungo edonswa kubanda, ukukhubazeka kweshubhu eligoqiwe elishisayo njengokuqhekeka noma ukuba khona kwethangi likaphethiloli elinomdwebo onembile kakhulu kwenziwa ngemva kokuphuka okwenzeka esifundweni, cishe akukho ukuwohloka kwepulasitiki okwenzekile, ngokuvamile kuwukuphuka okungama-brittle. I-Brittle fracture ibangelwa izizathu ezihlukahlukene. Okufana nokuthi: umngcele wokusanhlamvu ukhuphuka, kungakhathaliseki ukuthi yikuphi okunamandla kunamandla we-matrix noma obuthakathaka, konke kuyimbangela yokuqhekeka; ukuhlukaniswa ekufakweni komngcele wokusanhlamvu kuyizizathu eziphukile; Ngaphezu kwalokho, ngisho nangaphansi kakhulu kunomkhawulo wesivuno wesiphambano ngaphansi kwemithwalo eguquguqukayo, kungase futhi kubangele ukuphuka kokukhathala kwenzeke.

Ngokuvamile, izakhiwo zemishini yezingxenye ze-hydraulic (pneumatic) ezisetshenziswa ekwakhiweni, izinto ezisetshenziswayo zithathwa njenge-homogeneous, okuqhubekayo, isotropic, ngokwale ndlela yokuhlaziya kubhekwa njengokuklama okuphephile, ngezinye izikhathi izingozi zizokwenzeka ukuphuka. Ucwaningo lwathola ukuthi ukucindezeleka low brittle fracture inqubo kwenzeka high amandla metallic materials, inhlangano impahla kude homogeneous, isotropic. Izinhlangano zinemifantu, kuzoba ne-inclusions, i-porosity nezinye iziphambeko ezingabonakala njenge-microcracks yezinto ezibonakalayo. Ngaphezu kwalokho, lo kwaphuka brittle futhi ilungu lokushisa efanele. Lapho abantu ngokucwaninga bathola ukuthi lapho izinga lokushisa lehla ngaphansi kwezinga lokushisa elithile, impahla izoguqulwa ibe yisimo esihlakazekayo, umthelela omuncwa amandla wehla, into eyaziwa ngokuthi i-cold brittleness, ngakho-ke umklamo kodwa futhi ngokusho kwelungu lokushisa elisebenzayo khetha ngezinga lokushisa elifanele le-cold-brittle transition of the material.