Download or read book Fatigue Crack Growth Under Spectrum Loads written by Ralph Ivan Stephens and published by ASTM International. This book was released on 1976 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Load Variables on Fatigue Crack Initiation and Propagation written by D. F. Bryan and published by ASTM International. This book was released on 1980 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Models for Predicting Fatigue Crack Growth Under Random Loading written by and published by ASTM International. This book was released on with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Measurement of Crack Tip Stresses by X ray Diffraction written by John Edmond Allison and published by . This book was released on 1978 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: To ensure the structural integrity of present day structures subjected to variable amplitude cyclic stress histories, a knowledge of the crack tip stress field is important. In this investigation, crack tip stresses were measured in specimens of 1020 and 1045 steel using a semi-automatic x-ray diffraction technique. Crack tip residual stresses were measured in the unloaded condition and crack tip 'applied' stresses were measured under load. It was observed that, for the alloys tested and within the confines of stress analysis by x-ray diffraction, a dependence exists for the maximum crack tip residual stress on the level of the previous stress intensity factor and also for the maximum crack tip 'applied' stress on the level of the applied stress intensity. This is in sharp contrast to theoretical models of the crack tip stress fields which predict an independence between crack tip stresses and stress intensity levels. Crack tip stresses were observed relative to the fatigue crack growth retardation process. Post overload crack tip stresses were greatly reduced from their pre-overload levels. Limited studies indicated that crack growth, after an overload, had little or no effect on the overload-induced crack tip residual stress distribution. Measurements taken at applied loads, indicated that portions of the material behind the tip of the extended crack were in compression while areas ahead of the extended crack were in tension. These results were considered in light of possible retardation mechanisms.

Download or read book Fracture Fatigue and Structural Integrity of Metallic Materials written by Sergio Cicero and published by MDPI. This book was released on 2020-05-13 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture, fatigue, and other subcritical processes, such as creep crack growth or stress corrosion cracking, present numerous open issues from both scientific and industrial points of view. These phenomena are of special interest in industrial and civil metallic structures, such as pipes, vessels, machinery, aircrafts, ship hulls, and bridges, given that their failure may imply catastrophic consequences for human life, the natural environment, and/or the economy. Moreover, an adequate management of their operational life, defining suitable inspection periods, repairs, or replacements, requires their safety or unsafety conditions to be defined. The analysis of these technological challenges requires accurate comprehensive assessment tools based on solid theoretical foundations as well as structural integrity assessment standards or procedures incorporating such tools into industrial practice. This volume is focused on new advances in fracture, fatigue, and structural integrity of metallic structural components containing defects (e.g., cracks, notches, metal loss, etc.), and also on those developments that are being or could be incorporated into structural integrity assessment procedures, such as BS7910, R6, or API 579-1/ASME FFS-1.

Download or read book Design of Fatigue and Fracture Resistant Structures written by P. R. Abelkis and published by ASTM International. This book was released on 1982 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Models for Predicting Fatigue Crack Growth Under Random Loading written by J. B. Chang and published by ASTM International. This book was released on 1981 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cyclic Stress Strain and Plastic Deformation Aspects of Fatigue Crack Growth written by L. F. Impellizzeri and published by ASTM International. This book was released on 1977 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cyclic Stress Strain and plastic deformation Aspects of fatigue crack growth written by L. F. Impellizzeri and published by ASTM International. This book was released on 1977 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Damage Tolerance of Metallic Structures written by J. B. Chang and published by ASTM International. This book was released on 1984 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USAF Damage Tolerant Design Handbook written by and published by . This book was released on 1984 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Testing and Analysis Under Variable Amplitude Loading Conditions written by Peter C. McKeighan and published by ASTM International. This book was released on 2005 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Life Analysis Methods Crack growth analysis methods for attachment lugs written by Thomas Richard Brussat and published by . This book was released on 1984 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture Mechanics of Metals Composites Welds and Bolted Joints written by Bahram Farahmand and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the preliminary stage of designing new structural hardware to perform a given mission in a fluctuating load environment, there are several factors that the designer should consider. Trade studies for different design configurations should be performed and, based on strength and weight considerations, among others, an optimum configuration selected. The selected design must withstand the environment in question without failure. Therefore, a comprehensive structural analysis that consists of static, dynamic, fatigue, and fracture is necessary to ensure the integrity of the structure. Engineers must also consider the feasibility of fabricating the structural hardware in the material selection process. During the past few decades, fracture mechanics has become a necessary discipline for the solution of many structural problems in which the survivability of structure containing pre-existing flaws is of great interest. These problems include structural failures resulting from cracks that are inherent in the material, or defects that are introduced in the part due to improper handling or rough machining, that must be assessed through fracture mechanics concepts.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1975 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Durability Methods Development written by J. N. Yang and published by . This book was released on 1979 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthochloronitrobenzene (OCNB) is a trace contaminant in Otto Fuel II (OFII), a nitrated ester used as a torpedo propellant by the U.S. Navy. In a published study, OCNB has been reported to produce multiple life tumors in male and female rats. The quantification of OCNB in OFII was performed by high pressure liquid chromatography. The OFII was performed by high pressure liquid chromatography. The OFII was found to contain 0.00165% ONCB and a distillate of OFII was found to contain 0.0009% OCNB. It was estimated that over a 12 month inhalation exposure to 240 mg/cum of OFII an animal would receive a total dose of 0.05 mg OCNB kilogram of body weight. This is insignificant compared to the total dose required for the previously published results. OCNB is not considered to be a factor in the outcome of the current studies.