CSWIP 3.1 DT & NDT

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Key notes:

General:

Fillet weld fracture and Butt weld nick-break tests are not used for WPS (only for WPQR)

CTOD impact test is used for Special concern in specification, not WPS

 

Hardness test: (Brinell-BHN/Vicker-HV/Rockwell-Rc)

Hardest region

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Impact test:

Izod vs Charpy

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Visual assessment

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 Tensile test:

Proof stress Rp 0.2 – used for un-identified Y.S material (aluminium)

Measuring the “overall strength of weld joint” –> TRANSVERSE T.S TEST

 

All weld metal T.S test –> For Electrode Manufacture only!

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Transverse test: Crack in Weld metal  ~> Base UTS, Crack in HAZ ~> 95% Base UTS

STRA Test:
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Macro/Micro Examination:

This is Quantity Test

Bend Test:

This test CAN evaluate the Fusion and Ductility

T < 12mm —> Root/Face Bend, T > 12mm —> Side Bend

Former diameter (A)

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PT TEST:

Operating temperature: 5* – 60*C

Best sensitivity method is Fluorescent Penetrant

MT TEST:

Dry powder can be operated over > 320 *C

Temperature limit < 650 *C

Can not use for Duplex – parametric magnetic, Only for Ferro-magnetic

Buhmar Castrol Strip

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Yokes or Prods

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UT TEST:

Frequency typically > 2MHz

Limit thickness > 8mm is applicable, common thickness 25mm -50mm

Not suitable for Castings ( Coarse Grain )

RT TEST:

IQI – Penetrameter 

keV mean of Penetrating power

DWSI (OD>100mm) DWDI (OD<100mm)

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Ir192 (10-50mm)/ Cobalt 60 (>50mm)

Half Life ~ Quantity by Half ( The penetrating ability is SAME)

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