OBJECTIVES The flexural strengths of veneering ceramics for zirconia were compared. METHODS With 10 different veneering ceramics for zirconia (test group) and three different veneering ceramics for the metal-ceramic technique (control group) three-point flexural strength and biaxial flexural strength according to ISO 6872: 1995 as well as four-point flexural strength according to EN 843-1: 20...

The moisture absorption behavior and the influence of moisture on thermal and mechanical properties of glass–fiber/polyetherimide (PEI) laminates have been investigated. The laminates were exposed to hydrothermal aging at two different temperatures and high moisture rates. The properties of as-received and hydrothermally aged samples were compared. The hydrothermally aged laminates contained a ...

The Ceramic On-Demand Extrusion (CODE) process is a novel additive manufacturing process for fabricating dense ceramic components from aqueous pastes of high solids loading. In this study, 3 mol% Y2O3 stabilized tetragonal zirconia polycrystal (3Y-TZP) parts were fabricated using the CODE process. The parts were then dried in a humidity controlled environmental chamber and sintered under atmosp...

Abstract The effect of limestone powder replacing fly ash on the mechanical properties engineering cementitious composites was investigated. results showed that water demand due to partial replacement by powder, but system decreased when ratio reached 100%. flexural strength specimen appears decrease with increasing age incomplete lime powder. toughness can be significantly improved complete

TiC-Ti-Al mixed powders and TC4 titanium alloy foils were overlapped layer-by-layer in the graphite die. The TC4-based laminated composite sheets reinforced by Ti aluminide and carbide were successfully fabricated via spark plasma sintering (SPS) at 1100 °C with a well-bonded interface. The composite layers were mainly composed of TiAl, Ti₃Al, Ti₂AlC, and Ti₃AlC₂ phases. The carbides particles ...

The capability to absorb energy, often called as toughness, is of importance in actual service conditions mesh reinforced composites, when they may be subjected static, dynamic and fatigue loads. Toughness evaluated under impact loads the strength. toughness materials are determined by two methods, (i) measuring deformation load, (ii) determining energy adsorption capacity load. Several methods...

Continuous carbon fiber composites with enhanced mechanical energy dissipation (vibration damping) under flexure are provided by incorporation of fillers between the laminae. Exfoliated graphite (EG) as a sole filler is more effective than carbon nanotube (SWCNT/ MWCNT), halloysite nanotube (HNT), or nanoclay as sole fillers in enhancing the loss tangent, if the curing pressure is 2.0 (not 0.5)...

Currently, the introducing of basalt and natural fibers into different geopolymer swift growth geopolymers. Despite geopolymers have good properties such as fire resistance, flame higher compressive strength durability, they suffer from low tensile flexural strength. Different types were used to increase strength, fracture toughness ductility The current article goals brief available earlier st...