Ipayipi lensimbi elivunguzayo elidonswa ukubanda, ishubhu elishisayo eligoqiwe lineziphambeko, njengemifantu noma insimbi evunguzayo, ipayipi elidonsa ngokunemba eliphakeme elibandayo ngemva kwethangi, phakathi nokuphuka, cishe akukho ukuguquguquka kwepulasitiki okwenzekayo, ukuphuka kwe-brittle. I-Brittle fracture ibangelwa izizathu ezihlukahlukene. Okufana nokuthi: imvula emingceleni yokusanhlamvu, kungakhathaliseki ukuthi inamandla kangakanani noma ibuthakathaka kunamandla e-matrix, yonke imbangela yokuqhekeka. Ukufakwa ekuhlukaniseni umngcele wokusanhlamvu kuyimbangela yenkinga. Ngaphezu kwalokho, ngisho nangaphansi kakhulu komkhawulo wesivuno womthwalo oshintshanayo, kungaholela nasekuqhekekeni kokukhathala.

I-Brittle fracture ekucindezelekeni okuphansi kwamandla aphezulu izinto zensimbi zenzeka ngesikhathi senhlangano kude ne-homogeneous, i-isotropic material. Inhlangano izoba nemifantu, kuzoba khona okufana nokufaka, ukukhubazeka kwe-porosity, lezi ziphambeko zingabukwa ezintweni ze-microcracks. Ngaphezu kwalokho, ukusetshenziswa kwe-brittle fracture kuhlobene nezinga lokushisa. Abantu ngocwaningo bathole ukuthi lapho izinga lokushisa lehla ngaphansi kwezinga lokushisa elithile, impahla izoguqulwa ibe yizimo eziphukayo, inciphise umsebenzi wayo wokumunca umthelela, into eyaziwa ngokuthi yi-brittle.