... The occurrence of distortions within facade elements in the form of leaning, bowed and vertically displaced wall construction is common in older structures. Quite often these conditions are identified by building owners and serve as the primary focus of investigations to assess...

... was lubricated. anisotropy single crystals ceramics composites multiaxial strength nickel aluminide tungsten carbide displacement strain stress J. A. Salem I and M. G. Jenkins 2 Biaxial Strength Testing of Isotropic and Anisotropic Monoliths REFERENCE: Salem, J. A. and Jenkins, M. G., "Biaxial...

... The development and validation of a prototype BISMAP (Biaxial Displacement Measurement by Machine Vision Processing) system is described. The non-contact biaxial displacement measurement system adapts machine vision technology to create a unique extensometer. The BISMAP system is built around...

... Two new experimental approaches are presented in this study to develop J-R curves: (1) from displacement versus crack length without load measurement and (2) from displacement alone without load and crack length measurement. The approaches are new applications of the method of normalization...

... Pullout tests were conducted on 30 pre-damaged specimens of a uniaxial and a biaxial polyester geogrid to determine the effect of damage on their pullout resistance and end displacement. The specimens were embedded in crushed aggregates and subjected to surcharge loads of 14 kPa and 20 kPa...

... The method of normalization is used in a new inverse way to develop J-R curves from test records that contain only load-versus-crack length values with no measure of displacement. These data may represent a special case where measurement of crack length is easier experimentally than...

... mat with six measuring points located 4 through 17 cm above the ankle along the anterior surface of the right lower leg; displacement of the leg and boot was determined from two-dimensional video analysis. Results indicate that the pressure generated on the lower leg by experienced skiers was larger...

... A fracture resistance curve method based on the crack-tip-opening displacement ( V R ) for a “stationary” crack has been previously developed to characterize stable crack growth and instability behavior of cracked metallic materials. In this study, the V R -curve method has been applied...

... vessel, positioned in the opening cut on the cylindrical shell. The test was performed by gradually increasing water pressure. Crack mouth opening displacement (CMOD) was measured by clip gage, and strains were measured by strain gages, positioned along the J-integral path. J-integral, CMOD, and hoop...

.... Hardness curves (hardness versus force curves) for various indenters are plotted and compared. adhesion coating conical indenter spherical indenter contact radius debonding displacement film glass epoxy hardness indentation radius load piling up plastic deformation prepreg sinking...

... This investigation evaluates alternative displacement techniques with the single-specimen compliance (SSC) procedure, which do not require the commonly used load-line displacement measurements in a compact toughness (CT) specimen to determine the J-R curve. The two techniques studied...

... displacement (CTOD) at a specified distance from the crack tip, or equivalently, a critical crack-tip-opening angle (CTOA). Whenever the CTOD (or CTOA) equaled or exceeded a critical value, the crack was assumed to grow. Single values of critical CTOD were found in the analysis to model crack initiation...

... the crack. Load, LVDT-displacement, strain-gage, and crack-mouth-opening-displacement measurements are acquired, stored, and printed at each deformation increment, and the J-integral is evaluated numerically by a minicomputer. J-integral values are plotted against the average specimen strain in real time...

... In this work the problem of the stability of a system deformed under displacement and load-controlled conditions is examined. The instability conditions are found from the load versus displacements, P -δ, characteristics of the system and the stiffness of the structure, K M , on a completely...

...-energy damage cascades. radiation irradiation displacement radiation damage stainless steels metals swelling vacancy interstitial voids fast neutrons radiation effects F. A. Nichols^ and Y. Y. Liu^ An Internally Consistent Model for Radiation-Induced Void Swelling* REFERENCE: Nichols...

... of the research program. concrete pipe soil-structure interaction computerized simulation cracks culverts displacement design field tests pipes research structural analysis structural engineering shear strength ultimate strength finite-element method R. A. Parmelee 1 A Study of Soil...

..., and the differences are discussed. concrete pipe soil-structure interaction computer simulation culverts displacement design field tests pipes research structural analysis structural engineering ultimate strength strength criteria finite-element method T. H. Wenzel I a n d R. A. Parmelee 2...

... cycle. Illustrative calculations for uniform cyclic loading are described and comparisons with experimental results made. stress strains fatigue crack propagation loads (forces) fracture properties displacement plastic properties dislocations M. F. Kanninen,^ C. Atkinson,^ and C. E...

... The displacement, helium production, and hydrogen production rates in five candidate materials for controlled thermonuclear reactors (CTR) (Type 316 stainless steel, molybdenum, columbium, vanadium, and sintered aluminum product) were calculated for seven potential irradiation facilities...

.... One element is circular in shape and its imposed displacement pattern is that of the four leading symmetric terms of the Williams stress function. The other element is triangular in shape and its imposed displacement pattern is that associated with the crack tip singularity. The convergence...