Which mechanism causes lower fracture toughness in amorphous solids, impacting structural integrity?

💡 Explanation

Reduced dislocation glide constraints cause lower fracture toughness because, without a crystalline lattice to impede dislocation movement in amorphous solids, dislocations propagate rapidly upon crack initiation, therefore promoting brittle fracture rather than ductile deformation.

• Which outcome occurs when an epoxy adhesive cures, causing cross-linking between adjacent polymer chains?
• Which effect on GPS satellite operations results when spacetime curvature variations are uncorrected?
• Which outcome reduces signal clarity when optical fibers experience stress?
• Which outcome occurs when a Stirling engine's regenerator experiences increased internal gas leakage across phase boundaries?
• Which mechanism causes signal attenuation in unshielded twisted pair ethernet cable at high frequencies?
• Which outcome occurs due to electron scarcity in deep submicron transistors?