آزمایش و تحلیل خستگی تحت شرایط بارگذاری متغیر (انتشارات فنی ویژه ASTM، ۱۴۳۹)

Thirty-eight peer-review papers provide the latest information on fatigue testing and analysis under variable amplitude spectrum loading conditions focus purely on fatigue testing, fatigue design techniques, or a combination of both. This new ASTM publication serves as an important reference for engineers and scientists involved in structural integrity and component lifetime management. Six sections cover: • Fatigue Testing and Laboratory • Aerospace Applications, including full-scale aircraft testing • Design Approaches and Modelling • Other Applications • Load Interaction • Probabilistic and Multiaxial Effects Foreword......Page 4 Contents......Page 7 Overview......Page 11 Principles of Variable Amplitude Fatigue Design and Testing......Page 15 Role of Variable Amplitude Fatigue Standards in Improving Structural Integrity......Page 36 A Framework for a Standardization Effort for Fatigue Crack Growth Testing Under Variable Amplitude Spectrum Loading......Page 48 Variable Amplitude Fatigue Crack Growth Using Digital Signal Processing Technology......Page 65 Variable Amplitude Loading on a Resonance Test Facility......Page 79 Development of a DCPD Calibration for Evaluation of Crack Growth in Corner-Notched, Open-Hole Specimens......Page 93 The F/A-18E/F Full-Scale Static and Fatigue Test Programs - An Overview......Page 109 Spectrum Editing for a Full-Scale Fatigue Test of a Fighter Aircraft Wing with Buffet Loading......Page 123 Large Commercial Aircraft Loading Spectra: Overview and State of the Art......Page 137 Spectrum Fatigue Testing and Small-Crack Life Prediction Analysis on a Coupon Similar to a Critical Design Detail of a CF188 Hornet Component......Page 150 Effect of Transient Loads on Fatigue Crack Growth in Solution Treated and Aged Ti-62222 at-54, 25, and 175° C......Page 164 Spectrum Coupon Testing of Fatigue-Resistant Fasteners for an Aging Military Aircraft......Page 181 Crack Initiation at a Notch under Constant and Selected Variable Amplitude Loading Conditions......Page 196 Fatigue Resistance Evaluation and Crack Kinetics Study for Aero Engine Fan Blades under Random Vibration......Page 210 High Cycle Variable Amplitude Fatigue of a Nodular Cast Iron......Page 223 Prediction of Crack Growth Under Variable-Amplitude and Spectrum Loading in a Titanium Alloy......Page 240 A Model for the Inclusion of Notch Plasticity Effects in Fatigue Crack Growth Analysis......Page 259 Comparisons of Analytical Crack Closure Models and Experimental Results Under Flight Spectrum Loading......Page 286 Multi-Mechanism Synergy in Variable-Amplitude Fatigue......Page 307 Crack Growth and Closure Behavior of Short and Long Fatigue Cracks under Random Loading......Page 328 Calculation of Stress Intensity Factors for Cracks in Structural and Mechanical Components Subjected to Complex Stress Fields......Page 343 Fatigue Life Modelling and Accelerated Tests for Components under Variable Amplitude Loads......Page 357 On the Causes of Deviation from the Palmgren-Miner Rule......Page 376 Fatigue Design and Experimentations with Variable Amplitude Loadings in the Automotive Industry......Page 388 High Cycle Fatigue Testing and Analysis Using Car Standard Sequence......Page 402 Degradation Parameters and Two-Stress Block Fatigue of Angle-Ply Carbon Fiber Reinforced Epoxy......Page 415 Study on Fatigue Design Loads for Ships Based on Crack Growth Analysis......Page 427 Life Prediction by Observation and Simulation of Short Crack Behavior in a Low Carbon Steel......Page 442 Effect of Overloads and Underloads on Fatigue Crack Growth and Interaction Effects......Page 458 Overload Effects in Aluminum Alloys: Influence of Plasticity and Environment......Page 473 Periodic Overloads in the Near Threshold Regime......Page 487 Fatigue Reliability Analysis of an Overload Effect in Welded Joints Including Crack Initiation and Plastic Zone as Random Variables......Page 497 Load History in Fatigue: Effect of Strain Amplitude and Loading Path......Page 510 Fuzzy Probabilistic Assessment of Aging Aircraft Structures Subjected to Multiple Site Fatigue Damage......Page 525 Probabilistic and Semi-Probabilistic Format in Fatigue Ship Classification Rules......Page 539 Comparison of the Rain Flow Algorithm and the Spectral Method for Fatigue Life Determination Under Uniaxial and Multiaxial Random Loading......Page 548 Validation of Complex Wheel/Hub Subassemblies by Multiaxial Laboratory Tests Using Standardized Load Files......Page 561 Fatigue Life of a SG Cast Iron under Real Loading Spectra: Effect of the Correlation Factor Between Bending and Torsion......Page 571 Author Index......Page 584 Subject Index......Page 586