.... The modulus decreases at a rate of 0.043 GPa/°C, and the strength increases slightly, although the scatter of the data is large in both cases. Polysilicon specimens produced by three vendors show essentially the same Young's modulus, but the fracture strengths vary by almost a factor of two. The first...

... to yield the best overall estimates of distribution parameters and fracture strengths. Two Weibull estimators for pooled fracture data are derived and discussed. One is based on linear regression and the other on the maximum likelihood technique. The pooled estimators are extensions of conventional linear...

...” of a composite laminate is a structural property and cannot be directly correlated to the “toughness” or strain to failure of the matrix system but must account for the damage progression which occurs in the specific laminate configuration. graphite/epoxy graphite/thermoplastic fracture strength notch...

... and the relationship of strengthening to the overall optical quality of the strengthened sample's surface. fracture strength high-average power lasers ion-exchange surface treatment phosphate glass solid-state laser glass surface compression surface strengthening thermal shock resistance Manuscript...

... are caused by out-of-plane effects of interlaminar stresses (delamination) or the elastic constraint of neighboring plies or both. These factors change as the stacking sequence and lamination angle are varied. composite materials notch sensitivity fracture strength delamination composite fracture...

... curve test procedures over the wide range of crack growth behavior observed is discussed. elastic properties plastic properties fracture tests fracture strength fracture toughness fracture properties weldments weld metal submerged arc welding impact tests impact strength J tests J...

... stress-strain diagrams stress analysis fracture mechanics fracture strength unloading brittleness Hiroichi Ohira ^ and Nobuhide Uda ^ Knee Point and Post-Failure Behavior of Some Laminated Composites Subjected to Uniaxial Tension REFERENCE: Ohira, H. and Uda, N., "Knee Point and Post-Failure...

... with numerical values calculated by Terada for crack-length-to-width ratios greater than 0.4. compact specimen plastic deformation displacements cracks stress functions collocation fracture strength crack propagation S. Mall^ and J. C. Newman, Jr.^ The Dugdale Model for Compact Specimen REFERENCE...

... and predictions are shown. fracture strength test methods toughness cracks fracture properties elastic properties plastic properties / . C. Newman, Jr. Prediction of Stable Crack Growth and Instability Using the Vp-Curve Method REFERENCE: Newman, J. C , Jr., "PredictionofStable Crack Growth...

... imprecision in the calculation of K Ic for materials with rising R-curves when tested with chevron-notched specimens. fracture fracture strength toughness fracture toughness cracks crack strength crack toughness short rod specimen short bar specimen chevron-notched specimens brittleness...

... for cracked structural components from laboratory specimens such as compact specimens. fracture mechanics fracture strength finite element method aluminums steels displacement cracks plastic deformation /. C Newman, Jr. * An Elastic-Plastic Finite Element Analysis of Crack Initiation, Stable...

... (fracturing) fracture (materials) advanced fiber composites ballistic damage impact strength military aircraft antiaircraft projectiles high-explosive projectiles tensile strength fracture strength ballistics residual strength J. G. Avery,' S. J. Bradley,' and K. M. King' Fracture Control...

... and center-cracked tension geometries. In addition, the analysis was employed to derive the Paris instability parameter T and the results compared with the existing formulations. fracture strength toughness crack resistance crack initiation crack propagation geometry instability low alloy...

.... Calculations of failure strain and fracture toughness corresponding to the measured final strain and flaw size are made for both vessels, and the results agree well with the measured values. fracture mechanics fracture toughness elastic-plastic analysis fracture strength pressure vessels nozzles...

... and analytical approaches to interpret their values, must be developed. concrete fiber concrete fracture strength crack propagation notched beams double cantilever beams notched tensile prisms multiple cracking surface energy size effects fracture mechanics reinforced concrete fracture...

... are described in detail, and various results for currently available rail steels are given. The future development of rail steels based on these evaluation methods is discussed. steels railroad tracks fatigue (materials) fracture strength wear K. Morton,^ D. F. Cannon,^ P. Clayton.^ and E. G. Jones...

... temperature. Use of deep face grooves to overcome testing problems in the high toughness range introduces serious questions as to applicability of test results to natural cracks in heavy section structures. crack propagation dynamic fracturing fracture (materials) fracture strength fracture...

... specimens with modest dimensions (400 by 140 by 50 mm) have the capacity for measuring K I m and K I D values in excess of 150 MPa·m ½ . crack propagation crack arrest fractures (materials) fracture properties fracture strength fast fracture crack velocity cantilever beams steels R...

... profiles for three-point-bend tests on polymethylethacrylate and a variously tempered tool steel are presented. crack velocity crack propagation metals nonmetals bend tests dynamics fracture strength fracture properties John Congleton * and B. K. Denton ^ Measurement of Fast Crack Growth...

... from load versus time records during crack propagation. The results show a dependence of K I D on crack velocity in good agreement with literature data. crack propagation dynamic properties fracture strength fractures (materials) fast fracture energy ratio (geometry) velocity bending...