This work investigates elevated temperature deformation in the nickel-based superalloy Haynes 230 and elastocaloric cooling in shape memory alloys. Three loading conditions were examined in the elevated temperature portion: ...

In this work, the tensile behavior of an additively manufactured (AM) alloy, titanium 6Al-4V, or Ti-6Al-4V (by wt. 90% titanium, 6% aluminum, 4% vanadium), is examined on multiple length scales using two-dimensional (2-D) ...

We present here a novel experimental/numerical protocol to extract the fracture toughness of the thin film/substrate interface. The testing method involves using a laser-induced acoustic stress wave to load the film/substrate ...

Freestanding devices fabricated for Microelectromechanical Systems (MEMS) employ slender polysilicon flexures that are prone to failure due to large operating stresses. Polycrystalline silicon (polysilicon) films with ...

This thesis presents new developments in structural design optimization on three topics: semi-analytical sensitivity analysis, design of composite structures fabricated via additive manufacturing, and topology optimization ...

Reactive metals are routinely added in applications such as propellants and explosives to increase energy density and total energy output. These materials are also becoming useful in warhead casings compared to traditional ...

In this work, a modified split Hopkinson pressure bar (SHPB) is used to impact one-dimensional granular chain of spheres. These homogeneous chains used here comprise of brass, aluminum, or stainless steel spherical beads, ...

In this experimental investigation the fracture behavior of functionally graded materials (FGMs) was studied by means of fracture experiments carried out on model polymer-based FGMs. Model graded materials were manufactured ...

Explosive devices with precisely tailored pressure output and detonation shock front velocities are in demand for numerous applications, such as mining, demolition, and defense applications. Heterogeneous explosives, ...

The correlation between the evolution of crystallite orientation in aramid fibers during loading and their mechanical and failure behavior were investigated. Three types of as-spun aramid fibers and a heat-treated type ...