. . . . "the measure of a material’s resistance to crack growth." . . . "Fracture toughness" . . . . "Christos Vasileiou" . "2026-01-16T08:22:13.127Z"^^ . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "ilwGmgRk21RhhYNqXoeLUGZ4duDDw6p+K14MUnNOhpWu/bzj79BRh5aUw2MH2sbNQUKsxVU919Ts4DWhEW6ymfEPPfBTSvQg5wqD34hvZiBxk1uQe/sm/HgpO0ybSdvKQzsCiNojOQYPF5EZFr1IQbFIwxUcrpnGe98DsBfU82PkAvvqPyDcKsvk4g9wCqv/eJYqBsY6+DVkvn+2nmz+Bsmrzth+GxXZciYPfFfgsDWTFwtjyAjLWinbrx3FNY4HUMaiLKQNgSbj51cZ7GRcATO1nGmzYQPuCBlDni+HRbyOw/XM+WNpHtySv8g9Mj0pWdmT4axDtsWYe1etjCkkAQ==" . . .