... that the influence of crack opening on growth rate in constant-amplitude tests is less than predicted by the model, while the influence of crack opening in variable-amplitude tests is greater than predicted by the model. crack closure crack propagation fatigue (materials) loads (forces) overload...

.... axial loads compressive strength concrete blocks grouting loads (forces) modulus of elasticity prisms strain stress Hong E. Wong^ and Robert G. Drysdale^ Compression Characteristics of Concrete Block IVIasonry Prisms REFERENCE: Wong, H. E. and Drysdale, R. G., "Compiession Characteristics...

...) stress analysis predictions loads (forces) R. Badaliance. H. D. Dill,' andJ. M. Potter' Effects of Spectrum Variations on Fatigue Life of Composites REFERENCE: Badaliance, R., Dill, H. D., and Potter, J. M., "Effects of Spectrum Variations on Fatigue Life of Composites," Composite Materials: Testing...

... cracking (fracturing) crack propagation life expectancy requirements faults tolerance failure (mechanics) loads (forces) failure probability mechanics structural properties structures J. R. Gebman' and P. C. Paris^ A Practical Probabilistic Method for Evaluating the Fail-Safeness...

... affecting the maximum peak stresses. crack propagation fatigue (materials) stress analysis predictions loads (forces) H. D. Dill, C. R. Saff, i and J. M. Potter^ Effects of Fighter Attack Spectrum on Crack Growth REFERENCE: Dill, H. D., Saff, C. R., and Potter, J. M., "Effects of Fighter...

... properties loads (forces) J. p. Hickerson, Jr.' Comparison of Compliance and Estimation Procedures for Calculating J-lntegral Values REFERENCE: Hickerson, J. P., Jr., "Comparison of Compliance and Estimation Procedures for Calculating J-Integral Values," Flaw Growth and Fracture, ASTM STP 631, American...

... 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...

... residual stress stress ratio loads (forces) M. K. Himmelein 1 and B. M. Hillberry 2 Effect of Stress .Ratio and Overload Ratio on Fatigue Crack Delay and Arrest Behavior Due to Single Peak Overloads REFERENCE: Himmelein, M. K. and Hillberry, B. M., "Effect of Stress Ratio and Overload Ratio on Fatigue...

... fatigue (materials) loads (forces) predictions J. Schijve 1 Observations on the Prediction of Fatigue Crack Growth Propagation Under Variable-Amplitude Loading REFERENCE: Schijve, J., "Observations on the Prediction of Fatigue Crack Growth Propagation Under Variable-Amplitude Loading," Fatigue Crack...

... in retardation models and that retardation life cannot be modeled based solely on overload plastic zone sizes. fatigue (materials) crack propagation fracturing residual stress loads (forces) plastic zone stress ratio aluminum alloys R. I. Stephens, ~ D. K. Chen, ~ a n d B. W. Horn ~ Fatigue Crack...

... were correlated with an extended crack closure concept. From this the maximum value of the opening stress intensity level following the overload/underload sequence can be determined and used to predict the number of delay cycles. crack propagation fatigue (materials) loads (forces) stress...

... fractography have been used to define the changes in crack size and tip shape which contribute to the overload effects. KEY WORDS: crack propagation, fatigue (materials), loads (forces), crack propagation, cyclic loads The strong effects of spectrum loads on the rate of fatigue crack propagation have been...

... to the determination of crack propagation life and crack arrest conditions are discussed. fatigue (materials) crack propagation stress ratio aluminum alloys titanium alloys carbon steels delay cycles loads (forces) cyclic loads O. A. Adetifa, ~ C. 17. B. Gowda, 2 and T. H. Topper ~ A Model for Fatigue...

... considerations within the plastic zones caused by the propagating crack. fatigue (materials) crack propagation aluminum alloys titanium alloys plastic deformation fracture properties damage loads (forces) G. tt. Jacoby, ~ H. N o w a c k , 2 and H. T. M. van Lipzig ~ Experimental Results...

... loads (forces) stress cycle K. H. Klippstein I a n d C. G. Schilling I Stress Spectrumsfor Short-Span Steel Bridges* REFERENCE: Klippstein, K. H. and Schilling, C. G., "Stress Spectrums for Short-Span Steel Bridges," Fatigue CrackGrowth UnderSpectrum Loads, ASTM STP 595, American Society for Testing...

... s ) n where Δ K rms is the root-mean-square stress intensity factor fluctuation, and A and n are material constants. crack propagation fatigue (materials) inspection steels loads (forces) J. M. Barsom 1 Fatigue Crack Growth Under Variable-Amplitude Loading in Various...

... was tested experimentally after predicting the equivalent number of constant-amplitude cycles for six different random-load sequences. The agreement between predictions and test results was good. crack propagation fatigue (materials) analyzing loads (forces) Wolf Elber 1 Equivalent Constant...

... for Ia and lb when such gross yielding occurs and are comparably good for the other cases investigated here. KEY WORDS: crack propagation, predictions, loads (forces), stresses, crack initiation, stress ratio, retarding, residual stress, fatigue (materials), fracture properties, crack closure...

... for load interaction effects in these cases. These effects include delayed retardation following high loads, crack growth acceleration during high loads, and dependence of growth rates on number of high loads. crack propagation fatigue (materials) stress analysis predictions loads (forces) H...

... with specimen thickness. crack propagation fatigue (materials) loads (forces) stress cycle retarding ultrasonics If. N. Sharpe, Jr., ~ D. M. Corbly, 2 andA. F Grandt, Jr. ~ Effects of Rest Time on Fatigue Crack Retardation and Observations of Crack Closure REFERENCE: Sharpe, W. N., Jr., Corbly, D...