Strength of Materials Lab Archives

Photoelasticity Experiment: Stress Analysis with a Polariscope

The photoelasticity experiment reveals the stress distribution inside a transparent model by viewing it under polarised light in a polariscope, […]

The buckling of columns experiment determines the critical load at which a slender column suddenly bends sideways and fails —

The Izod and Charpy tests both measure a material’s impact toughness — the energy it absorbs when fractured by a

Poisson’s ratio is the ratio of lateral (transverse) strain to longitudinal (axial) strain when a material is stretched or compressed

Toughness vs resilience both measure a material’s ability to absorb energy under load, but at different points. Resilience is the

Creep vs fatigue describes two distinct ways materials fail under load over time. Creep is the slow, time-dependent plastic deformation

The core difference between ductile vs brittle materials is how much plastic (permanent) deformation they undergo before fracture: a ductile

Bending moment vs shear force comes down to this: shear force is the net internal transverse (vertical) force acting across

The core stress vs strain difference is this: stress is the internal resisting force per unit area that develops inside

Elastic deformation is temporary and fully recoverable: when the load is removed, the material returns to its original shape. Plastic