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Contents contributed and discussions participated by ahmad subahman

ahmad subahman

best air compressor buying guide - 0 views

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    If you plan to buy air compressor first thing is how pressure size/air flow(PSI) do you want to use(performance you need), How much tank size, what powered want to use(Gas Powered vs. Electric) and also How much Horsepower.
ahmad subahman

Best Yahoo! Messenger Tutorial Site - 0 views

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    Best Yahoo! Messenger Tutorial Site
ahmad subahman

The Sony Ericsson Vivaz Camera - 0 views

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    The brand new Sony Ericsson Vivaz the latest Symbian OS 5th Edition powered smartphone of the Entertainment Unlimited series with an 8.1 megapixel sensor that shoots HD video.
ahmad subahman

Power on Two Stroke Cycle - 0 views

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    The power stroke starts after the piston passes TDC. Figure 25 illustrates the power stroke which continues until the piston reaches 91° ATDC, at which point the exhaust valves start to open and a new cycle begins.
ahmad subahman

Type of Brittle Fracture (part 2) - 0 views

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    The notch that can result from faulty workmanship or from improper design produces an extremely high stress concentration which prohibits yielding.
ahmad subahman

How to Identification OF ELECTRODES (BS 639) - 0 views

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    In the BS system (standard BS 639: 1986) for carbon and carbon manganese steels the electrode may be partially or completely specified by a letter or number.
ahmad subahman

Specific Cause and remedies Inclusions, Weld metal cracking and base metal cracking - 0 views

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    There are some cause and remedies welding defects : Inclusions Cause:Failure to remove slag, Remedies: Clean surface and previous weld bead Cause:Entrapment of refractory oxides, Remedies: Power wire brush the previous bead
ahmad subahman

Welding defects, ROOT DEFECTS - 0 views

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    Below some welding defects, Roots Defects : Incomplete root penetration, lack of fusion, Excess penetration bead, Root concavity. (suck-back, underwashing), etc
ahmad subahman

Heat Treatment application in welding - 0 views

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    Many metals must be given heat treatment before and after welding. The inspector's function is to ensure that the treatment is given, and given correctly, to the details supplied.
ahmad subahman

Residual Stress in Welding - 1 views

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    Most material products contain residual stresses, often up to yield point. Pipe products, for example, are usually very highly stressed. The tendency to develop residual stresses increases when the heating and cooling are localised.
ahmad subahman

How Lameral Tearing Happened ? - 0 views

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    LAMELLAR TEARING. A step like crack that occurs in thick section tee joints and closed corner joints.
ahmad subahman

Inspection by Penetrating Liquid - 0 views

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    Inspection by penetrating liquid By means of the inspection with penetrating or technical liquid of penetrating dye, discontinuities can be detected as cracks that enter the surface. A liquid dye is attracted by hair action towards a thin crack, that of another way would be invisible.
ahmad subahman

Share knowledge,Inspection,NDT,welding procedures,process and techniques - 0 views

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    useful
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    we share about welding inspection tips,welding procedures and techniques for SMAW,MIG,TIG,FCAW,SAW and other welding process for stainlles steel and other alloys,equipments,welders,materials,inspector,NDT,NDE.
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