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To achieve welds which penetrate the full depth of the material, it is necessary to either specially design and prepare the geometry of the joint or cause vaporization of the material to such a degree that a "keyhole" is formed, allowing the heat to penetrate the joint. This is not a significant
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welding processes. However, whilst these processes were able to improve stability, reproducibility, and accuracy of welding, they share a common limitation - the energy does not fully penetrate the material to be welded, resulting in the formation of a melt pool on the surface of the material.
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Many advances in welding technology have resulted from the introduction of new sources of the thermal energy required for localized melting. These advances include the introduction of modern techniques such as
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in the welding process, the older usage of the phrase "X-Ray welding" might cause confusion; but the two terms are unlikely to be used in the same work environment because
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Until recently, sources of x-rays of sufficient intensity to cause enough volumetric heating for welding were not available. However, with the advent of third-generation
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like porosity, concavities, cracks, cold laps, slag and tungsten inclusions, lack of fusion & penetration, etc., are rarely seen in a radiographic
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disadvantage in many types of material, as good joint strengths can be achieved, however for certain material classes such as ceramics or
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X-ray beams have been shown to have potential as welding sources for classes of materials which cannot be welded conventionally.
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sources, it is possible to achieve the power required for localized melting and even vaporization in a number of materials.
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Department of a fabrication or manufacturing shop that the welding work performed by an X-ray welder would pass an
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The phrase "X-ray welding" also has an older, unrelated usage in quality control. In this context, an
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is a tradesman who consistently welds at such a high proficiency that he rarely introduces
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Richard A. Rosenberg, Qing Ma, William
Farrell, Mark Keefe, and Derrick C. Mancini:
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Advanced Photon Source, Argonne
National Laboratory, Argonne, IL 60439 USA.
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in the weld pool, during the welding process. It is assumed (
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is an experimental welding process that uses a high powered
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148:X-ray welding of metal-matrix composites.
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70:performed by an X-ray welder.
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166:Radiograph Interpretation.
117:metal ceramic composites
73:With the growing use of
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79:synchrotron radiation
75:synchrotron radiation
171:2014-02-16 at the
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164:NDT Resources -
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108:laser beam
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169:Archived
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191:Welding
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