...Tom Zhang; Y. Lawrence Yao Metal foam is an excellent lightweight material with promising industrial applications. Laser forming has been studied and shown to be a viable non-contact method to shape metal foam panels into desired geometry without fracturing the foam’s cellular structure. However...

... and consistency in the data. The fracture surfaces of the failed tensile specimens were examined under SEM to understand the effect of microstructural features on the final fracture. The size and density of the dimples observed on the fracture surface were measured using ImageJ image analysis software. More...

... a small shearing clearance, a scar still remains a major defect on the cut-edge. Therefore, in the present study, the mechanism of scar formation of a DP steel sheet, grade SPFC980Y (JIS) subject to a shearing process was investigated and clarified based on the microstructural evolution, fracture...

...%, indicative that LSP keeps hydrogen from permeating into the metal. Similarly for the high strength steel, LSP treating limited the hardness changes from hydrogen to less than 5%. Mechanical U-bends subjected to Mattsson's solution, NaCl, and MgCl 2 environments are analyzed, to determine changes in fracture...

... Melting Additive Manufacturing process, it was found that: Fracture toughness and fatigue crack growth were comparable to literature properties of wrought Ti-6Al-4V. Residual stresses are low due to the elevated temperature in the build chamber, which minimizes temperature gradients during local...

.... However, the increase in punching speed can involve new strain and fracture mechanisms which are characteristic of the dynamic loading. In high energy rate forming processes the effect of temperature versus time gradient on the material properties becomes important due to the heat accumulated from plastic...

... detection. Peak-to-peak variation (sample length of 10 mm) of detail subprofile at level 4 09 07 2010 14 10 2011 12 01 2012 12 01 2012 clutches crack detection feature extraction fracture leak detection machine tools machining chatter pistons seals (stoppers...

.... The hole expansion test is used to evaluate the effect of shear edge conditions on the edge stretchability. The results show that an optimal selection of the die clearance and the shearing angle results in a less damaged edge, which significantly delays edge fracture in the forming process and increases...

..., resistance spot welding (RSW) process of 1.25 mm thick dual-phase steel DP780 with and without the external magnetic field applied has been experimentally investigated. Impacts of the EMS method on nugget appearance, quasi-static performance, fatigue life, and fracture morphology have been systematically...

... 2011 30 08 2011 30 08 2011 biotechnology fracture molecular dynamics method cell damage cell direct writing cell membrane stability molecular dynamics normal pressure rupture force Increased research activities have been witnessed in the development of biomaterial...

... residual stresses spring coiling helical spring cold-wounded spring bars bending elastoplasticity fracture internal stresses machine tools rods (structures) springs (mechanical) stress analysis torsion wear winding (process) 03 02 2009 14 06 2011 11 08 2011 11 08...

... roughness and eventually to the fracture of the glass sample during the machining. In a material removal context—in opposition with polishing—feed rate should be carefully chosen since it is the most influential parameter on the surface finish. To maximize productivity while obtaining low-valleys surface...

... of brittle fracturing was established. The experiments are intended to assist in the optimization of the grinding process as technology dominant in the granite finishing. Experimental setup for measuring the normal component of the microcutting force Experiments were carried out using...

...Chinmaya R. Dandekar; Yung C. Shin Metal matrix composites, due to their excellent properties of high specific strength, fracture resistance, and corrosion resistance, are highly sought after over their nonferrous alloys, but these materials also present difficulty in machining. Excessive tool wear...

.... In this article, experiments were carried out on aluminum foils to study the forming limits and fracture of thin films in LDF. The deformation depth was measured by an optical profilometer and the formed feature was observed using a focused ion beam and a scanning electron microscope. Meanwhile, a finite element...

... model are elaborated and, as a result, a relatively simple formula is proposed to calculate the minimum bending radius from the reduction in the area at fracture, the strain hardening exponent, and the yield stress, which are material parameters available from tensile tests. 05 02 2009 14 12...

... diamond grain. The investigations carried out make provisions for establishing critical grain penetration and cutting depths and allow the prediction of the normal cutting force component as a function of grain penetration speed and depth. microcutting grinding marble cutting force fracture...

...Gracious Ngaile; Chen Yang Common part failures in tube hydroforming include wrinkling, premature fracture, and unacceptable part surface quality. Some of these failures are attributed to the inability to optimize tribological conditions. There has been an increasing demand for the development...

...R. Akarapu; A. E. Segall During a variety of high-speed cutting operations that can include both laser and traditional saw methods, full workpiece support is not always practical or even possible. As a result, costly premature fractures and associated damage such as chips, burrs, and cracks (micro...

... variable BHF in the presence of process uncertainties by minimizing the magnitude of wrinkling and fracture defects under probabilistic constraints. To demonstrate the efficacy of this approach, it analyzes the conical cup drawing of an aluminum killed deep-drawing quality steel under process uncertainties...