<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>CRACKING OF SIMPLE STRUCTURAL GEOMETRIES</title>
      <link>https://trid.trb.org/View/164067</link>
      <description><![CDATA[This report presents the results of an investigation concerning the general subject of the cracking of simple structural geometries under tensile loading.  A summary is given of the effects of edge notch geometry and the effects of interrupted longitudinal members which were previously reported in Progress Reports I and II of this project, whereas the effects of edge preparation, the effects of fastenings, and the effects of welded pads are reported in their entirety for the first time.]]></description>
      <pubDate>Thu, 21 May 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/164067</guid>
    </item>
    <item>
      <title>CORROSION FATIGUE OF A MARINE ALUMINUM ALLOY (5456-H343) IN THE PRESENCE OF SHALLOW CRACKS</title>
      <link>https://trid.trb.org/View/143573</link>
      <description><![CDATA[Marine aluminum alloy 5456-H343 is a candidate primary structural material for naval high performance ships. This material in the form of 1/8 inch sheet was used to obtain initial alternating surface stress v cycles to failure data in air and salt water. Room temperature tests were performed using deflection controlled fully reversed bending at 30 Hz. Data was obtained for smooth and shallow, sharply notched specimens for fatigue lives up to 10 million cycles. Notches were semi-elliptical surface cracks with depths equal to .002 in., .0115 in., and .025 in. 5456-H343 showed excellent corrosion fatigue resistance in salt water, with increasing environmental sensitivity in the range of 1-10 million cycles. The material exhibits some notch sensitivity at a fatigue life of 10 million cycles. The following fatigue design/failure criterion were developed: (1) for shallow cracks less than .001 in. deep, the maximum fatigue stress is determined by endurance limit or fatigue strength of smooth specimens, and (2) for shallow cracks greater than .020 in. deep, the maximum fatigue stress is determined by the threshold or allowable stress intensity factor of notched specimens.]]></description>
      <pubDate>Mon, 29 Dec 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/143573</guid>
    </item>
    <item>
      <title>BOUNDARY INTEGRAL EQUATION SOLUTION OF PLANE ELASTICITY PROBLEMS WITH HIGH STRESS CONCENTRATIONS</title>
      <link>https://trid.trb.org/View/84264</link>
      <description><![CDATA[A numerical method for determination of stresses in two-dimensional elastic bodies with high stress concentrations is presented.  Emphasis is placed on bodies with a notch having a fillet of small radius and bodies with a crack of small width.  These static boundary value problems are formulated in terms of boundary integral equations of a type used previously by Barone and Robinson for sharp notches and cracks.  For the fillet problem a small inner region containing the fillet and bounded by a circle is separated and analyzed numerically under the loading system of each of the Williams' solution of the corresponding sharp notch.  The results are then used to develop analytical solutions for the intermediate region adjacent to the fillet region.  In this way the details of the boundary configuration of the fillet is reflected in a set of generalized displacements which characterize the intermediate field.  For the solution of the whole body including the loaded boundary, kernels developed by Barone and Robinson are used to pick out the generalized displacement of the intermediate region.  The solution of the wide crack problem is similar except that a perturbation scheme is required to ensure homogeneous boundary conditions at the actual edges of the crack.]]></description>
      <pubDate>Tue, 31 Jul 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/84264</guid>
    </item>
    <item>
      <title>CYCLIC STRESS-STRAIN BEHAVIOR: ANALYSIS, EXPERIMENTATION, AND FAILURE PREDICTION</title>
      <link>https://trid.trb.org/View/13916</link>
      <description><![CDATA[Fifteen papers by various authors are presented.  The topics discussed are three vital aspects of the damage assessment in engineering materials.  Experimental techniques to determine the cyclic stres-strain behavior and the initiation of cracks in materials are discussed.  The importance of time (rate) dependent processes as they affect deformation and crack initiation is delineated in various papers.  Notches and their life-reducing effect are examined from an experimental and analytical point of view. In the latter, elasto-plastic computer programs are employed.  The crack initiation and crack propagation phase are separated and treated individually.  The problems of damage definition, damage accumulation, and life prediction under variable amplitude loading receive attention in several papers.  Individual papers are indexed separately.]]></description>
      <pubDate>Wed, 20 Feb 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/13916</guid>
    </item>
    <item>
      <title>APPROXIMATE DETERMINATION OF STRESSES NEAR NOTCHES AND CORNERS IN ELASTIC MEDIA BY AN INTEGRAL EQUATION METHOD</title>
      <link>https://trid.trb.org/View/1782</link>
      <description><![CDATA[A numerical method for determining stresses near corners and cracks in two-dimensional elastic bodies is presented.  The method is based on an integral equation formulation which uses the character of the displacements near such irregular boundary points.  Kernels for the integral equations at points along smooth portions of the boundary are obtained from the solutions to concentrated force problems in the usual manner.  The most significant part of the study consists of the development of convenient new kernels for the integral equations written at the irregular boundary points.  Suitable numerical techniques are used to convert the set of integral equations to a set of linear algebraic equations which involve the boundary values as unknowns. Accurate results are obtained for three sample problems using a relatively small number of simultaneous equations. Moreover, the results are stable with respect to the number and distribution of boundary points.  (Author)]]></description>
      <pubDate>Mon, 29 Oct 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/1782</guid>
    </item>
    <item>
      <title>PERIODIC OVERLOADS AND RANDOM FATIGUE BEHAVIOR</title>
      <link>https://trid.trb.org/View/102793</link>
      <description><![CDATA[THE STRESS-STRAIN RESPONSE FOR A COMPLEX VARYING LOAD WAS ANALYSED ON THE BASIS OF A CYCLIC STRESS-STRAIN CURVE OBTAINED BY INCREMENTAL STEP STRESS TESTS.  A NEW CUMULATIVE FATIGUE DAMAGE LAW WAS PROPOSED, CONSIDERING THE FACT THAT THE CYCLIC STRESS-STRAIN CURVE FOR COMPLEX VARYING LOAD DIFFERS FROM THAT FOR CONSTANT AMPLITUDE CYCLIC LOAD. ASSUMING THAT LOCAL STRESS-STRAIN BEHAVIOR AT A STRESS CONCNETRATION OR A CRACK TIP IS SIMILAR TO THAT OF THE BULK MATERIAL, THE LAW WAS EXTENDED TO THE CASE OF NOTCHED SPECIMEN, AND THE EXTENSION WAS VERIFIED BY EXPERIMENT. /ASTM/]]></description>
      <pubDate>Wed, 24 Oct 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/102793</guid>
    </item>
    <item>
      <title>NOVEL PRINCIPLE FOR THE COMPUTATION OF STRESS INTENSITY FACTORS</title>
      <link>https://trid.trb.org/View/3976</link>
      <description><![CDATA[A state of plane strain in a notched or cracked elastic domain under the action of boundary tractions is considered. It is shown that the stress intensity factor K at a root of a notch can be re presented in the form of a weighted average of the tractions, and that the weight functions involved can be derived from the boundary displacements of two special stress fields, each of which is characterized by a "fundamental singularity" at the root and by the absence of externally impressed forces.]]></description>
      <pubDate>Sat, 21 Apr 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/3976</guid>
    </item>
    <item>
      <title>THE EFFECTS OF SURFACE LAYER ON PLASTIC DEFORMATION AND PROPAGATION</title>
      <link>https://trid.trb.org/View/8021</link>
      <description><![CDATA[In Chapter I, metallographic evidence of the existence of the surface layer is given.  Using etch-pit techniques on an iron-silicon alloy, it is shown that the dislocation concentration of strained specimens decreases away from the surface.  In Chapter II, a relationship is given between the surface-layer stress and fatigue failure.  When surface-layer stress attains a critical value, the specimens fracture.  An excellent correlation is reported between the life predicted from surface-layer stress data and fatigue life found experimentally.  In Chapter III, surface-layer stress at the root of notches is reported. The surface-layer stress was found to increase rapidly as the stress concentration increased.  In Chapter IV, the crack propagation rate for an iron-silicon alloy is reported.  The crack propagation rate under plane stress conditions decreased in specimens given the SLE treatment. An examination of the surfaces showed that the dislocation concentration was much lower in the SLE-treated sample than in the untreated specimens.  Chapter V reports an unsuccessful attempt to detect slip-line formation and strain under sustained loads up to 500 hr.  It is believed that greater measurements sensitivity is required for successful detection.]]></description>
      <pubDate>Fri, 02 Mar 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/8021</guid>
    </item>
    <item>
      <title>ESTIMATION OF CORROSION FATIGUE STRENGTH BY CORROSION RESISTANCE AND NOTCH SENSITIVITY OF MATERIALS</title>
      <link>https://trid.trb.org/View/2788</link>
      <description><![CDATA[In the present study, rotating-bending fatigue tests of various materials have been carried out in saline solutions and in hydrochloric acid, and the corrosion fatigue strength is discussed in terms of the static and the dynamic corrosion resistance indicated by the corrosion current and also of the notch sensitivity.]]></description>
      <pubDate>Sun, 21 Jan 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/2788</guid>
    </item>
    <item>
      <title>PLASTIC STRESS-STRAIN HISTORY AT NOTCH ROOTS IN TENSILE STRIPS UNDER MONOTONIC LOADING</title>
      <link>https://trid.trb.org/View/6402</link>
      <description><![CDATA[A comparison of theory with tests on flat, notched specimens of AISI 4340 steel, heat treated, with initial elastic concentration factors of 1.5 to 2.0 shows a systematic discrepancy which is attributed in part to notch strengthening due to triaxial stress.  The discrepancy is of the order of 5% for the Neuber theory and larger for the Hardrath-Ohman theory for notch strains of less than 0.015 in./in. and becomes progressively larger for both theories at notch strains in excess of 0.015 in./in.  For the mild notches studied here, the Neuber theory has better predictive value.]]></description>
      <pubDate>Fri, 20 Oct 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/6402</guid>
    </item>
  </channel>
</rss>