Which statement describes a test for toughness as given?

Which statement describes a test for toughness as given?

• A. Hit a sample with a hammer or dot punch
• B. Bend test
• C. Drop weight impact
• D. Tensile test

Answer: (B)

Testing toughness is about how much energy a material can absorb before it fractures under deformation. A bend test subjects the sample to bending until it curves and deforms; a tough material will bend and deform plastically without cracking, showing it can absorb energy before failing. If cracking or fracture occurs during bending, toughness is low. Other tests focus on different properties: a hammer-like impact test isn’t a standard toughness measure in this context, a drop-weight impact test does assess impact energy but in a different setup, and a tensile test mainly gauges strength and ductility rather than energy absorption during fracture.

Testing toughness is about how much energy a material can absorb before it fractures under deformation. A bend test subjects the sample to bending until it curves and deforms; a tough material will bend and deform plastically without cracking, showing it can absorb energy before failing. If cracking or fracture occurs during bending, toughness is low. Other tests focus on different properties: a hammer-like impact test isn’t a standard toughness measure in this context, a drop-weight impact test does assess impact energy but in a different setup, and a tensile test mainly gauges strength and ductility rather than energy absorption during fracture.