Why Is There Weld Testing?Why Is There Weld Testing?

ASM – AWS (NTX) Joint MeetingASM – AWS (NTX) Joint Meeting Michael S. Beaton, PEMichael S. Beaton, PE

17 February, 201117 February, 2011

AWS WELDING CODESAWS WELDING CODES

• 34 PAGES OF 34 PAGES OF CODES, CODES, SPECIFICATIONS, SPECIFICATIONS, AND AND RECOMMENDED RECOMMENDED PRACTICESPRACTICES

• D1.1 STRUCTURAL D1.1 STRUCTURAL WELDING CODE – WELDING CODE – STEELSTEEL

• D1.2 –ALUMINUMD1.2 –ALUMINUM• D1.3 – SHEET D1.3 – SHEET

STEELSTEEL• D1.4 -REINFORCING D1.4 -REINFORCING

STEELSTEEL• D1.5 BRIDGE D1.5 BRIDGE

WELDINGWELDING

AWS WELDING CODES, contAWS WELDING CODES, cont.

• D1.6 -Structural Welding D1.6 -Structural Welding Code—Stainless SteelCode—Stainless Steel

• D1.8 Structural Welding D1.8 Structural Welding Code -Seismic Code -Seismic SupplementSupplement

• D1.9 Structural Welding D1.9 Structural Welding Code—TitaniumCode—Titanium

• D3.6 UNDERWATER D3.6 UNDERWATER WELDINGWELDING

• ASME BPVCASME BPVC• API 1104API 1104• AAR Appendix WAAR Appendix W• ABSABS• Other industries and Other industries and

companies, automotive, companies, automotive, airframe & powerplant, airframe & powerplant, Navy NuclearNavy Nuclear …

ASME BOILER & PRESSURE ASME BOILER & PRESSURE VESSEL CODE – Section IXVESSEL CODE – Section IX

• -in QW-100.1: “The -in QW-100.1: “The purpose for qualification purpose for qualification of a WPS is to of a WPS is to determinedetermine that the that the weldmentweldment proposed for construction proposed for construction is is capable of providingcapable of providing the the required propertiesrequired properties for its for its intended intended applicationapplication. Welding . Welding procedure qualification procedure qualification establishes the properties establishes the properties of the weldment,…”of the weldment,…”

• -in QW-100.2: “In -in QW-100.2: “In performance qualification, performance qualification, the basic criterion the basic criterion established for welder established for welder qualification is to qualification is to determine the determine the welder’s welder’s ability to deposit sound ability to deposit sound weld metalweld metal.”.”

What do we test?What do we test?

• Visual Visual InspectionInspection

What do we test?What do we test?

• Transverse-Transverse-weld weld TensilesTensiles

• (generally, two per (generally, two per WPS qualification)WPS qualification)

• Full size tubeFull size tube• All-Weldmetal TensileAll-Weldmetal Tensile

Installing an Extensometer on Installing an Extensometer on an All-Weldmetal Tensile an All-Weldmetal Tensile SampleSample

Defects in Weld Revealed by the Tensile TestDefects in Weld Revealed by the Tensile Test

What do we test?What do we test?

• BendsBends• (generally, four per (generally, four per

WPS qualification)WPS qualification)• 2-root + 2-face, or2-root + 2-face, or• 4-side4-side• (depends on material (depends on material

thickness)thickness)

What do we test?What do we test?

• NICK BREAKNICK BREAK

What do we test?What do we test?

• Charpy V-Notch Charpy V-Notch ImpactImpact

• Weld (CW)Weld (CW)• HAZ (CH)HAZ (CH)• Fusion LineFusion Line• Fusion Line +1mmFusion Line +1mm• Fusion Line +5mmFusion Line +5mm

What do we test?What do we test?

• CHARPY’s -Sets of three – most CodesCHARPY’s -Sets of three – most Codes

• Set of five, take middle three – AWS D1.5Set of five, take middle three – AWS D1.5

What do we test?What do we test?

• Hardness Hardness SurveysSurveys–NACENACE

–APIAPI

–ENEN

–others others

VICKERS INDENTATIONSVICKERS INDENTATIONS

What do we test?What do we test?

• MICROSTRUCTURAL MICROSTRUCTURAL ANALYSISANALYSIS

• Volume Fraction by Volume Fraction by Systematic Manual Systematic Manual Point Count (E562Point Count (E562))

Mixed filler metal deposits discovered in a weld cross sectionMixed filler metal deposits discovered in a weld cross section

Trinity Metals LaboratoryTrinity Metals LaboratoryQUALITY PHILOSOPHYQUALITY PHILOSOPHY

• QUALITY is a fundamental business strategy for QUALITY is a fundamental business strategy for Trinity Metals Laboratory.Trinity Metals Laboratory.

• Our GOAL is to be the best provider of testing Our GOAL is to be the best provider of testing services in our market in terms of accuracy, services in our market in terms of accuracy, dependability, and value to our customers.dependability, and value to our customers.

• We are committed to providing our customers We are committed to providing our customers with consistently high quality testing services, with consistently high quality testing services, – defect free defect free – on time on time – at competitive prices.at competitive prices.