...Muhammad Ali Ablat; Ala’aldin Alafaghani; Jian-Qiao Sun; Ala Qattawi Origami-based sheet metal (OSM) bending uses the origami concept to form three-dimensional (3D) structures from a two-dimensional (2D) sheet by performing a series of bending operations. The OSM bending relies on material...

... deformation-induced surface roughness aluminum alloys bending scanning laser confocal microscopy strain localization Closure panels (e.g., hoods, deck lids, lift gates, side doors, and roof panels) are good examples of where the difference in mechanical performance between traditional steel...

... this goal, a number of 6-ply, woven carbon fiber/epoxy laminates are fabricated by using various lengths of distribution media. The spatial variations of mechanical properties of these laminates are characterized using a three-point bending fixture. It is shown that for relatively thinner laminates...

... at 121 °C in a Fisher-Scientific convection oven for 2 h and post cured at 177 °C for 2 h. Plaques were made at loadings of 0, 0.015, and 0.15 wt. % of CNTs. 10 03 2011 14 07 2011 22 07 2011 14 10 2011 14 10 2011 adhesion bending bending strength carbon nanotubes...

... and finite strain), bending and creep tests. The failure, plasticity, and elasticity parameters modifications are established. Tensile and bending tests lead to some similar characteristics evolution as, for example elastic modulus values. The creep behavior evolution is more complex to understand. Both...

... been applied to analyzing R-curves of RCC generated using double cantilever beam and single cantilever bend specimens to establish a bridging law for RCC. The bridging law has been implemented into a micromechanical code for computing the fracture response of a bridged crack in a structural analysis...

... to uniaxial bending stress and a plate with biaxial residual stresses that vary from compression to tension through the thickness are shown. Schajer , G. S. , Roy , G. , Flaman , M. T. , and Lu , J. , 1996 , “ Hole Drilling and Ring Core Methods ,” Handbook of Measurement of Residual...

... and high-speed digital photography on edge cracked specimens in three-point bend configuration. A toughened neat epoxy system, Hexcel 3900, is also studied to provide a baseline comparison for neat PETI-5 system. The tensile stress-strain responses show PETI-5 to have excellent mechanical characteristics...

...Lifeng Wang; Christine Ortiz; Mary C. Boyce The force-depth behavior of indentation into fibrillar-structured surfaces such as those consisting of forests of micro- or nanoscale tubes or rods is a depth-dependent behavior governed by compression, bending, and buckling of the nanotubes. Using...

... performed on the glass/epoxy laminated composites having several fiber orientations, 0 deg, 45 deg, and 90 deg, to calibrate the elastic and viscoelastic properties of the fibers and matrix. Three-point bending creep tests at elevated temperature ( 80 ° C ) were then carried out for a number of control...

... to capture the nonlinear behavior at a high macroscopic shear strain level. The primary microscopic cell wall deformation mode under macroscopic in-plane shear loading was identified to be the bending of the vertical cell wall h , which is perpendicular to the macroscopic loading direction. The re-entrant...

... to validate the numerical models and assess the crankshaft mechanical parameters such as the yield strength and the fatigue limit. An experimental innovative method applied to evaluate the crankshaft residual stresses by means of strain measurements under bending was also developed. This methodology proved...

... field during cyclic bending is analyzed for strain ratios R ε = 0 and − 1 for multiple realizations of polycrystalline microstructure. Cyclic microplasticity in favorably oriented martensite grains is the primary driver for the relaxation of residual stresses in HCF. For the case of R ε = − 1...

...M. Abedini; H. M. Ghasemi; M. Nili Ahmadabadi; R. Mahmudi In this paper, mechanical and tribological properties of a Ti-50.3 at % Ni alloy were investigated. The transformation temperatures of the alloy were determined using differential scanning calorimetry. Three-point bending tests were...

...M. Toya; K. Fukagawa; M. Aritomi; M. Oda; T. Miyauchi Asymmetric three-point bending of a layered beam containing an interior interface crack is analyzed on the basis of the classical beam theory. Axial compressive and tensile forces are induced by bending in the parts of the beam above and below...

... cyclic bending and torsion loading. It is demonstrated that the proposed criterion gives satisfactory results for all the five checked materials. Fatemi , A. , and Socie , D. F. , 1988 , “ Critical Plane Approach to Multiaxial Fatigue Damage Including Out-of-Phase Loading ,” Fatigue...

... , which meets adhesion requirements for integration in Cu interconnects. The adhesion measurements are performed with a custom built four-point bend fracture mechanics testing system. Comparison of the copper film thickness to the measured adhesion energy indicated that there is no effect on the adhesion...

... understood. This paper investigates the effects of the large compliance mismatch between the film and the substrate and of the film thickness for model systems using nanoindentation tests, finite element simulations, and an analytical model based on a classical plate-bending solution. The results showed...

... bending fatigue. x-ray diffraction (XRD) measurements were carried out to determine the initial and stabilized residual stress fields. The residual stress field created by the surface treatments has been introduced into a finite element (FE) model by means of a fictitious temperature distribution...

...G. S. Schajer; Y. An Uniaxial tension and compression stress-strain curves are simultaneously evaluated from load and surface strain data measured during a bending test. The required calculations for the uniaxial results are expressed as integral equations and solved in that form using inverse...