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    <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>
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      <title>DEVELOPMENT OF ARC SIMULATION SYSTEM ON METAL ACTIVE GAS WELDING PROCESS</title>
      <link>https://trid.trb.org/View/480396</link>
      <description><![CDATA[An arc simulation system was developed for welding automation. When the welding conditions are selected, the simulator can simulate and display arc behaviour and bead appearance under the given conditions in real-time on the monitor of a personal computer.  This is very important to prevent weld defects in welded joints and to maintain the quality of welds.  It is also very effective to use the simulator as equipment to improve the skill of welders.  If the arc behaviour can be simulated under non-arc conditions, it is expected that the arc behaviour will be better understood and it will have a greater effect on skill improvement.  The technology for simulating arc behaviour and bead appearance in gas shielded arc welding on a personal computer was developed.]]></description>
      <pubDate>Thu, 27 Mar 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/480396</guid>
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    <item>
      <title>ACTIVATING FLUX - INCREASING THE PERFORMANCE AND PRODUCTIVITY OF THE TIG AND PLASMA PROCESSES</title>
      <link>https://trid.trb.org/View/466939</link>
      <description><![CDATA[This paper presents details of the A-TIG process and its operating characteristics.  A mechanism is proposed by which the unique depth of weld pool penetration is achieved.  Whilst there are undoubted significant productivity benefits to be gained, its performance in comparison to the conventional TIG plasma processes is highlighted and the potential areas of application are identified.]]></description>
      <pubDate>Fri, 01 Nov 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/466939</guid>
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    <item>
      <title>UNDERWATER WELDING - INFLUENCING QUANTITIES AND LIMITING WORKING DEPTHS IN METAL-ARC ACTIVE GAS WELDING AND MANUAL METAL-ARC WELDING</title>
      <link>https://trid.trb.org/View/439038</link>
      <description><![CDATA[Underwater welding engineering has become increasingly important in recent years.  Research and development activities have made great progress, particularly in the field of metal-arc active gas welding in a dry hyperbaric atmosphere, and the use of manual metal-arc welding in wet surroundings is becoming equally important.  Influencing quantities in underwater welding by this method and the limiting working depths are discussed.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/439038</guid>
    </item>
    <item>
      <title>ROUTINE HARDENABILITY TESTING OF STRUCTURAL AND PIPELINE STEELS</title>
      <link>https://trid.trb.org/View/433668</link>
      <description><![CDATA[In recent years, certain steelmakers have added minute amounts of boron to some of their products to improve the yield strength without affecting the nominal "carbon equivalent". (Although the P(cm) formula does mention boron, accurate measurements at levels around 10 ppm is difficult.) This has caused problems with welding procedures, as heat-affected zone (HAZ) hardnesses exceeding 400 HV have been measured. A direct measure of hardenability was sought that could be used on every heat of steel to ensure that free-issued steel would permit fabricators to comply with the client's HAZ hardness limits, and to provide confidence that the fabrication would be free from HAZ cold cracking. This paper explains how the present test was developed, and how it has been applied to the purchase of linepipe and structural steel plate.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/433668</guid>
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    <item>
      <title>INVESTIGATIONS ON LOCAL SHIELDING SYSTEMS FOR UNDERWATER APPLICATIONS</title>
      <link>https://trid.trb.org/View/449081</link>
      <description><![CDATA[Inert gas underwater welding methods with additional water shielding is an up-and-coming application.  However, reliable information on the hydrodynamic behaviour of these shielding systems is lacking.  This paper is concerned with fundamental research and model considerations.  Comparisons are made with investigations on actual shielding systems, and results on variations with nozzle and flow arrangements are discussed.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/449081</guid>
    </item>
    <item>
      <title>ADAPTIVE CONTROL GMA WELDING - A NEW TECHNIQUE FOR QUALITY CONTROL</title>
      <link>https://trid.trb.org/View/433669</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/433669</guid>
    </item>
    <item>
      <title>GAS SHIELDED FUSION WELDING OF ALUMINIUM ALLOYS - A REVIEW OF THE TECHNIQUES</title>
      <link>https://trid.trb.org/View/444919</link>
      <description><![CDATA[The article reviews the main gas shielded welding processes and procedures used to join aluminium and its alloys.  It also provides some guidance as to their usage and application.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/444919</guid>
    </item>
    <item>
      <title>PENETRATION CONTROL OF PULSED SYNERGIC MIG WELDING</title>
      <link>https://trid.trb.org/View/432341</link>
      <description><![CDATA[This paper describes a method of penetration control based on optical feedback of the fluctuations emitted from the weld pool backface.  The method is independent of emissivity and therefore insensitive to the backface surface condition.  The theoretical limitations of penetration control for MIG welding are discussed in terms of their implications for practical welding.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/432341</guid>
    </item>
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      <title>ELECTROGAS WELDING OF X 8 NI 9 WITH AUSTENITIC FILLER METAL</title>
      <link>https://trid.trb.org/View/438589</link>
      <description><![CDATA[This paper examines the possible application of electrogas welding with added metallic powder for 10-30mm thick sheets of X 8 Ni 9. The investigations encompass the strength and toughness values of the seam, the hardness over the joint as well as its microstructure. Defect-free weld joints with good mechanical properties can be achieved using the process and the alloy-technical modifications of the filler material which is metal in powder form.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/438589</guid>
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    <item>
      <title>ATMOSPHERIC CONTAMINATION OF TIG WELDING GAS HOSES - CAUSES AND CURES</title>
      <link>https://trid.trb.org/View/446689</link>
      <description><![CDATA[In this article the author examines the causes of contamination in the gas hoses used for TIG welding.  He then goes on to outline experiments undertaken by a shipbuilder to find a solution to this problem, and the results obtained.  The shipbuilder has since put the information to good use in the TIG welding of submarines.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/446689</guid>
    </item>
    <item>
      <title>REPAIR OF SHIPBOARD PIPING SYSTEMS</title>
      <link>https://trid.trb.org/View/398381</link>
      <description><![CDATA[Cracks, blisters, corrosion and other kinds of defects that must be repaired develop in various shipboard piping systems during deployments.  Sometimes the entire damaged section of pipe must be replaced, but more often it is sufficient to apply a patch or weld over the defective area.  Steel pipes can be repaired using arc welding, while copper pipes can be gas- welded or soldered; defects in bronze fittings are usually repaired with gas welded beads.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/398381</guid>
    </item>
    <item>
      <title>WELDING IN SHIPBUILDING--YESTERDAY, TODAY, AND TOMORROW</title>
      <link>https://trid.trb.org/View/404318</link>
      <description><![CDATA[The evolutionary development of welding in the shipbuilding industry is related, starting with the cored electrodes that were introduced in 1925.  From then on, there has been continued progress in the field of welding, especially in the areas of filler metals, methods, and equipment. As a result, the strength characteristics of the weld metal and the electrode have risen to unprecedented levels. Innovative welding techniques such as metal active gas and inert gas welding have been introduced and tested and application problems-- for example in cooling of materials--are being solved. Considering that the eventual reconstruction and expansion of shipyards is certain to happen, the next phase of welding automation may soon begin.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/404318</guid>
    </item>
    <item>
      <title>MECHANIZED HIGH POWER VERTICAL WELDING FOR THICKER PLATES (8MM)-- PROCESS DEVELOPMENT AND APPLICATION</title>
      <link>https://trid.trb.org/View/397341</link>
      <description><![CDATA[The author examines development and application of high speed welding technology for thick plates. Specific methods that are discussed in the paper include electrogas high speed welding; automated  electroslag high speed welding; T-joint welding; electrogas fillet welding; and electroslag fillet welding.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397341</guid>
    </item>
    <item>
      <title>ADVANCES IN ARC WELDING PROCESSES FOR SHIPBUILDING</title>
      <link>https://trid.trb.org/View/397340</link>
      <description><![CDATA[This paper is a review of recent advances in arc welding processes and equipment. Major advances are discussed in the context of the following broad areas: mechanized techniques for welding flat sections; semiautomatic welding processes, i.e., MIG (Metal Inert Gas) solid wire and flux cored arc welding; and mechanized and fully automatic welding techniques, including electrogas welding and arc welding robots.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397340</guid>
    </item>
    <item>
      <title>GUIDE TO MIG WELDING PROCESSES</title>
      <link>https://trid.trb.org/View/106638</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Fri, 18 Mar 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/106638</guid>
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