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In order to groove a crack with a laser beam, parameters with high energy density in the laser- beam focus should be chosen. The material, i.e. steel, ...

http://www.scientific.net/MSF.539-543.4059.pdf

cracking test. Abstract. In this paper, the weldablity of a low-carbon Cu ...

http://www.scientific.net/KEM.353-358.2015.pdf

shown in Table 1. The y-groove weld cracking test and repair welding test ...

http://www.scientific.net/MSF.580-582.5.pdf

"Classical" fatigue grooves with orientations across the direction of crack movement in samples of steel 12KhI8N9T are observed only in the middle of region ...

http://www.springerlink.com/index/M7M1602T47640Q83.pdf

ductile grooves, i.e., traces of crack front advance. In the majority of ...

http://www.springerlink.com/index/gn33371q0v7q2033.pdf

The tests permit the consideration that the use of steel fiber-reinforced ...

http://www.springerlink.com/index/t3560635830mnn08.pdf

A C-Mn steel of PWR secondary piping component with a ferritic-pearlitic ... Non -conventional CT specimens with 20% side grooves and a reduced crack length ...

http://hal.archives-ouvertes.fr/docs/00/25/44/32/PDF/ajp-jp4199606C604.pdf

the ferritic steel probe is easily visible. As described before the flanks of the artificial inserted groove are heated more. inductor artificial crack ...

http://ieeexplore.ieee.org/iel5/5540659/5547245/05547297.pdf?arnumber=5547297

hydrogen cracks are sited either in the parent steel heat-affected zone or in .... devoted to different cracking test specimens and/or groove geometries. ...

http://herkules.oulu.fi/isbn9514271815/isbn9514271815.pdf

Definition: Groove welds without steel backing, welded from one side, ... All surfaces and edges shall be free from fins, tears, cracks or any other defects ...

http://www.wpsamerica.com/Sample_Welding_Techniques_AWS_Code_Views%20_SMAW_Stainless_Steel.pdf

Dec 8, 2003 ... total length of any crack or series of consecutive cracks does not exceed two staybolt pitches. ... metal and the resultant groove welded ...

http://edocket.access.gpo.gov/cfr_2003/octqtr/pdf/46cfr59.10-5.pdf

Detection of cracks in steel bridges is critical to the safe maintenance of highway .... and one of the tee specimens had complete penetration groove welds. ...

http://www.tfhrc.gov/hnr20/pubs/0018.pdf

groove weld cracking test'. Details are shown in below figure. The thickness of the tested steel was. 125mm and 78mm. As required, weld surfaces were ...

http://211.68.23.116/Upfiles/LectureFiles/2007122755725377.pdf

The Y-groove test proved to be the most sensitive to weld cracking and the .... Weld centreline solidification crack (arrowed) in 312 stainless steel weld ...

http://dspace.dsto.defence.gov.au/dspace/bitstream/1947/4098/1/DSTO-TR-0320%20PR.pdf

produce the desired cracking at the groove, the depth of the groove ... steel reinforcement being used. When such joints are required, the ...

http://140.194.76.129/publications/eng-manuals/em1110-3-132/c-7.pdf

firmation through the Y-groove cracking test according to JIS Z 3158 employing the steel and welding consumables that would be used ...

http://www.nsc.co.jp/en/tech/report/pdf/n9011.pdf

procedures to minimize stress concentration. Figure 4 shows the results of y- groove restraint cracking laboratory tests of various steel welds, ...

http://www.kobelcowelding.com/Kobelco%20Welding%20Today/Vol-7(No2).pdf

filler metal on A572 grade 50 steel. The weld metal/base metal properties for this combination ... tions such as Partial Joint Penetration (PJP) groove welds and fillet welds. .... hydrogen cracking. When undermatched weld metal is ...

http://www.jflf.org/pdfs/papers/design_file7.pdf

The cracks were grown by three-point bend in steel bars whose dimensions ... cylindrical side-grooves. Alter crack growth. the \'-shaped starter notches ...

http://www.cnde.iastate.edu/MAPOD/Reference%20Documents/Fatigue%20cracks%20and%20liquids%20-%20Cethedec%20review.pdf

This can embrittle the steel, or make it less tough, and less capable of .... latest bulletin and order, revealed nozzle or J-groove weld cracks and/or ...

http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/prv.pdf

welding can cause cracking near the dis- similar metal fusion boundary. .... V- groove joint geometry. The included angle of the groove was 60 deg, and ...

http://www.aws.org/wj/supplement/AREFAE_1/ARTICLE1.pdf

steel bond to the concrete crossing the crack void was damaged during the break for many feet .... The grooved crack is then filled with a non- ...

http://www.thermalchem.com/downloads/Industrial/Crack_and_Joint_Repairs.pdf

will have to be carefully monitored when using these steels and welding consumables. Y-groove (Tekken) Testing. Typical HAZ cracking results for low ...

http://www.nabro.unl.edu/articles/20002012/download/Adonyi1.pdf

the melting point of the stainless steel base metal, as seen in ... Grooved Trench. Welded Deposit. Crack. No Repair on Analysis. Prevent SCC Propagation ...

http://wwwsoc.nii.ac.jp/aesj/publication/JNST2001/No.10/38_896-900.pdf

cast stainless steel and a standard carbon steel material it could be shown that an EDM side- groove assists the crack extension procedure in an ideal way ...

http://www.structuralintegrity.eu/pdf/esis/Documents/Conference/ECF/15/Weiss%20K%20and%20Nyilas%20A.pdf

3 Results of ESSO test for crack arrest toughness. Table 5 Results of y-groove cracking test for steel plates produced by MACS rocess ...

http://www.jfe-steel.co.jp/archives/en/ksc_giho/no.13/e13-077-082.pdf

preparing a “U” or a “V” groove to the full depth and length of crack and then ... 3.4 Repair to Stainless steel overlays and clad. ...

http://www.plant-maintenance.com/articles/Pressure_Vessel_Repairs.pdf

aluminum alloy and steel roll. Therefore, the use of copper roll ... small cracks. In the present study effect of the grooved roll on a high speed twin roll ...

http://www.archivesmse.org/vol30_2/30213.pdf

J-groove weld. Type 308 stainless steel cladding. Fig. 20. Micrograph of the interdendritic cracks initiated from the exposed cladding surface and extending ...

http://iweb.tms.org/NM/environdegXII/0833.pdf

the dovetail groove's load-bearing surface, removing the cracks in this area. ... cracks can be initiated by fretting at the interface between steel wedges ...

http://www.national-electric-coil.com/TechRefs/SES201-DovetailCrks-LowRes.pdf

from forged steel with cooling bores. Failure in .... Ring groove wear and cracking. The ring ... If cracks are found in the serration area, the ...

http://www.wartsila.com/Wartsila/global/docs/en/service/Brochures/reconditioning_services.pdf

Cracking in Duplex Stainless Steel Weld Metal”, IIW Doc.,. IX-1461-87. JIS-Z- 3158 (Japanese Industrial Standard, Method of Y-. Groove Cracking Test) ...

http://ir.library.osaka-u.ac.jp/metadb/up/LIBJWRIK01/jwri20_02_241.pdf

stainless steel I-beams are currently underway to assess the fatigue .... fatigue crack initiation. Most of the groove weld cracks appear to ...

http://e-book.lib.sjtu.edu.cn/isope2001/pdffiles/papers/382.pdf

(2) Use larger groove radius. The use of welding joints with a larger groove radius ... hot crack susceptibility of 2.25Cr-tMo steel welds by ...

http://everpeakintl.com/uploadfiles/file/Q&A-14%20Hot%20Cracks%20-%20How%20it%20Occurs%20and%20How%20it%20Can%20Be%20Prevented.pdf

groove or circular-patch tests were made,. In the next contract period, hot- tension and weld--metal cracking tests will be continued on high—strength steels ...

http://contrails.iit.edu/DigitalCollection/1952/WADCTR52-322part03.pdf

test samples that have a long crack front to obtain a statistical mean value of fracture toughness. In the ... obtained for steel, aluminum, graphite and mullite ceramic ... to the groove line, each of the segments can be viewed as a CT ...

http://apps.ornl.gov/~pts/prod/pubs/ldoc4401_sntt_graphite_r3.pdf

Fatigue crack growth of ABS EH36 steel under spectrum loading intended to simulate sea .... a lengthened and side-grooved (with a net thickness of ...

http://www.boemre.gov/tarprojects/049/049AG.PDF

Numerous shallow grooves, cracks or striations, continuous or intermittent on the surface of wrought steel, the surfaces on which when viewed ...

http://www.tatasteeleurope.com/file_source/StaticFiles/Business%20Units/CC&I/Products/Plates/Steel_Terminology.pdf

Groove Adhesion Testing. ➢ Microscratch Test of Thin Coatings ... ➢HAZ (Heat affected zone) in steel is due to tempered to untempered martensite transformation ... Showing excellent structure, adhesion, and crack-resistance properties ...

http://www.dtic.mil/ndia/2008gun_missile/6332LeeSabrina.pdf

May 15, 2007 ... Carbon steel Stainless steel Aluminum Other – specify ... Is the weld bead and base material free of visible cracks? ... (A) CJP groove welds in butt joints transverse to the direction of computed tensile ...

http://www-group.slac.stanford.edu/esh/eshmanual/references/hoistingFormWeldInspect.pdf

known that hot cracking of austenitic stainless steel .... Hot Cracking Test Program. As described above, two different groove ...

http://www3.vtt.fi/files/research/ism/manufacturingsystems/laser_welding_thick_section_austenitic.pdf

of their carbon steel hot water boiler tubes during the NAPE April ... black oxide on the groove and parts of the crack surface, as well as lack of ...

http://www.capitolboilerworks.com/articles/NAPE%202009%20Seminar%20Article.pdf

steel. Nozzle 3 contained two through-wall axial cracks, which traversed the J- groove weld. The longest of these two cracks extended for approximately 1.3 ...

http://www.hss.doe.gov/DepRep/archive/oversight/DavisBesse050302.pdf

Using appropriate carbon steel filler rods, make an open-root v-groove weld on ... No porosity, inclusions, cracks, or excessive undercut ...

http://www.nccer.org/documents/academic/weldingsd.pdf

rows by using a grooved pad in the mounting press. ... steel grit particle with objectionable crack. (10X). Figure II-Photograph ...

http://www.sfsa.org/sfsa/pubs/rss/20-66.pdf

Steel-gusset retrofit, Concrete-jacket retrofit,. Conduit hole cracks, Gusset cracks, ... groove-welded post—to-base plate connections were susceptible to ...

http://www.dot.ca.gov/hq/esc/earthquake_engineering/Research_Reports/vendor/uc_berkeley/1997-13/UCB-EERC-97-13-V2.pdf

inclusive shall be permissible as a permanent repair of steel pipe. ... (b) for gouges, grooves and cracks, confirming complete removal of the defect by ...

http://www.clockspring.com/PDF/Repair%20Cracks%20Gouges%20Etc.pdf

was found during a bare metal visual examination of the head and volumetric examinations found evidence of cracking on some of the J-groove welds. ...

http://www.ndt.net/article/jrc-nde2009/papers/15.pdf

(1) Remove scale, rust, oil, grease, water, and other dirt from welding grooves beforehand to prevent defects such as porosity and cracking in the weld ...

http://www.kobewelding.com.sg/pdf/research/148-151.pdf

Stress Concentrations for Bar with Groove (cont.) Figure 6.6 Stress concentration factor for round bar with groove. ... Alloy steel 4340 tempered at 260°C ... If the actual crack length is 2x, the stress intensity factor is defined as ...

http://www.mae.ufl.edu/haftka/structures/stressconc.pdf