Module 6 - 1

Charpy Test
Prepare notched specimens (sets of 3)
Test each specimen set at a specific
temperature
Impact sa...
Module 6 - 2

Charpy Specimens

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Module 6 - 3

Typical
Charpy
Testing
Machine

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Module 6 - 4

Charpy Test Results
Energy absorption - Ft. lbs.
Percent shear - %
Lateral expansion - Mils

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Module 6 - 5

Transition
Temperature
Determinations

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Module 6 - 6

Transition Temperature Samples

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Module 6 - 7

Soundness Testing
Bend testing
Nick-break
Fillet break

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Bend Test Samples

Module 6 - 8

Transverse Weld Bend Specimens

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Bend Test Samples

Module 6 - 9

Longitudinal Weld Bend Specimens

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Module 6 - 10

Guided Bend Test Jig

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Module 6 - 11

Wrap-around
Bend Test Jig

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Module 6 - 12

Bend Test Procedure
Prepare sample
Orient in jig
Bend sample (weld and HAZ in bend)
Evaluate bend to Code

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Module 6 - 13

Nick Break Test

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Module 6 - 14

Evaluation of Nick-Break Test

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Module 6 - 15

Fillet Break Test
Prepare sample
Break sample
Evaluate fracture

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Module 6 - 16

Fillet Break - Sample Fracture

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Module 6 - 17

Fillet Break Specimen - T-Joint

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Module 6 - 18

Fatigue Testing
Prepare samples
Test series of various loads
Test to failure, record cycles
Test at maximum...
Module 6 - 19

Chemical Testing

Determines Chemistry of Metals
Spectrographic
Combustion (CO, CO2 determination)
Wet chem...
Module 6 - 20

Corrosion Testing
“Evaluates metals in corrosive environments”

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Module 6 - 21

Metallographic Testing
Shows structure of metal
Macroscopic - less than 10X
Microscopic - typically more th...
Module 6 - 22

Photomacrograph

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Module 6 - 23

Photomicrograph

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Module 6 - 24

Heat Treatment - 1 of 3
Mechanical properties are often very
dependent upon heat treat condition
Many types...
Module 6 - 25

Heat Treatment - 2 of 3
Heat Treatments For Steels:
Preheating
Stress Relieving
Normalizing
Annealing
Quenc...
Module 6 - 26

Heat Treatment - 3 of 3
Heat Treatments For Stainless Steels:
Preheating
Stress Relieving
Solution Annealin...
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  • WIT Pg. 6-27, Fig. 6.28
    Instructor Should Explain:
    Review Items
    Charpy V-Notch - Most Common
    Also, Mention Charpy Keyhole - More Expensive to Make Samples
    Refer to Specimen Fig. 6.28, Pg. 6-27
  • WIT Pg. 6-27, Fig. 6.28
    Instructor Should Explain:
    Slide Shows Charpy V-Notch Specimens
    - Shape of “V” Precise
  • WIT Pg. 6-27, Fig. 6.28
    Instructor Should Explain:
    Discuss Procedure and Test Steps
    Note: Anvil Strikes Sample on Side Opposite V-Notch and Breaks It.
  • WIT Pg. 6-28
    Instructor Should Explain:
    Describe Each
    Also,
    Where to Look to Determine % Shear
    Plot & Check Resulting Curve
  • WIT Pg. 6-29, Fig. 6.31
    Instructor Should Explain:
    Ductile and Brittle
    Point Out The Amount of Ductility in the Above Samples
    Ferrous Charpy Specimens Broken at 20o Temperature Intervals With a 0o Transition Temperature.
  • WIT Pg. 6-29
    Instructor Should Explain:
    Describe Each Type of Test and the Results Usually Achieved
  • WIT Pg. 6-30, Fig. 6.32
    Instructor Should:
    Note Weld Locations Shown by Etching.
    Point Out the Area Where the Maximum Bending Is Applied to Each Specimen:
    Face Bends
    Root Bends
    Side Bends
  • WIT Pg. 6-31, Fig. 6.35
    Instructor Should Explain:
    Note Weld
    Differentiate Between:
    Face Bend
    Root Bend
  • WIT Pg. 6-30, Fig. 6.33 & 6.34
    Instructor Should Explain:
    Describe Use:
    The Size of Sample That Can Be Tested
    Placement of Specimen
  • WIT Pg. 6-30, Fig. 6.34
    Instructor Should Explain:
    Review Use
  • WIT Pg. 6-30
    Instructor Should:
    Discuss Procedure - Cover Each Item On Slide
  • WIT Pg. 6-31, Fig. 6.36
    Instructor Should Explain:
    D1.1
    API 1104 Method
    Prepare Sample
    Break Sample
    Evaluate Fracture
  • WIT Pg. 6-31, Fig. 6.37
    Instructor Should:
    Discuss Results of Nick-Break Test As Shown on Slide
  • WIT Pg. 6-31
    Instructor Should:
    Discuss Procedure
    Cover Each Item On the Slide
  • WIT Pg. 6-32, Fig. 6.38
    Instructor Should Explain:
    T- Section
    Fig. 6.38 - Fillet Weld Break Specimen
    Fig. 6.39, Pg. 6-32 - Shows Method of Rupturing Fillet Break Specimen
  • WIT Pg. 6-32
    Instructor Should Explain:
    Seldom Done by CWI
    - Lab Tests
  • WIT Pg. 6-32
    Instructor Should:
    Describe Each
  • WIT Pg. 6-32
    Instructor Should Explain:
    The CWI May or May Not Be Involved in Corrosion Testing
  • WIT Pg. 6-33
    Instructor Should Explain:
    Piece of Material Is Taken to the Lab for Testing
  • WIT Pg. 6-33, Fig. 6.40
    Instructor Should Explain:
    Slide Shows - Weld Photomacrographs
    Note - Weld, HAZ and Base Metal
  • WIT Pg. 6-33, Fig. 6.41
    Instructor Should Explain:
    Slide Shows - Typical Photomicrographs
    Describe
  • Aws mechanical testingmodule6c

    1. 1. Module 6 - 1 Charpy Test Prepare notched specimens (sets of 3) Test each specimen set at a specific temperature Impact sample Plot results Am e r i c a n We l d i n g So c i e t y
    2. 2. Module 6 - 2 Charpy Specimens Am e r i c a n We l d i n g So c i e t y
    3. 3. Module 6 - 3 Typical Charpy Testing Machine Am e r i c a n We l d i n g So c i e t y
    4. 4. Module 6 - 4 Charpy Test Results Energy absorption - Ft. lbs. Percent shear - % Lateral expansion - Mils Am e r i c a n We l d i n g So c i e t y
    5. 5. Module 6 - 5 Transition Temperature Determinations Am e r i c a n We l d i n g So c i e t y
    6. 6. Module 6 - 6 Transition Temperature Samples Am e r i c a n We l d i n g So c i e t y
    7. 7. Module 6 - 7 Soundness Testing Bend testing Nick-break Fillet break Am e r i c a n We l d i n g So c i e t y
    8. 8. Bend Test Samples Module 6 - 8 Transverse Weld Bend Specimens Am e r i c a n We l d i n g So c i e t y
    9. 9. Bend Test Samples Module 6 - 9 Longitudinal Weld Bend Specimens Am e r i c a n We l d i n g So c i e t y
    10. 10. Module 6 - 10 Guided Bend Test Jig Am e r i c a n We l d i n g So c i e t y
    11. 11. Module 6 - 11 Wrap-around Bend Test Jig Am e r i c a n We l d i n g So c i e t y
    12. 12. Module 6 - 12 Bend Test Procedure Prepare sample Orient in jig Bend sample (weld and HAZ in bend) Evaluate bend to Code Am e r i c a n We l d i n g So c i e t y
    13. 13. Module 6 - 13 Nick Break Test Am e r i c a n We l d i n g So c i e t y
    14. 14. Module 6 - 14 Evaluation of Nick-Break Test Am e r i c a n We l d i n g So c i e t y
    15. 15. Module 6 - 15 Fillet Break Test Prepare sample Break sample Evaluate fracture Am e r i c a n We l d i n g So c i e t y
    16. 16. Module 6 - 16 Fillet Break - Sample Fracture Am e r i c a n We l d i n g So c i e t y
    17. 17. Module 6 - 17 Fillet Break Specimen - T-Joint Am e r i c a n We l d i n g So c i e t y
    18. 18. Module 6 - 18 Fatigue Testing Prepare samples Test series of various loads Test to failure, record cycles Test at maximum load vs no failure Plot data Determine endurance limit Am e r i c a n We l d i n g So c i e t y
    19. 19. Module 6 - 19 Chemical Testing Determines Chemistry of Metals Spectrographic Combustion (CO, CO2 determination) Wet chemistry (titration) X-Ray fluorescence (XRF) Am e r i c a n We l d i n g So c i e t y
    20. 20. Module 6 - 20 Corrosion Testing “Evaluates metals in corrosive environments” Am e r i c a n We l d i n g So c i e t y
    21. 21. Module 6 - 21 Metallographic Testing Shows structure of metal Macroscopic - less than 10X Microscopic - typically more than 100X Am e r i c a n We l d i n g So c i e t y
    22. 22. Module 6 - 22 Photomacrograph Am e r i c a n We l d i n g So c i e t y
    23. 23. Module 6 - 23 Photomicrograph Am e r i c a n We l d i n g So c i e t y
    24. 24. Module 6 - 24 Heat Treatment - 1 of 3 Mechanical properties are often very dependent upon heat treat condition Many types of heat treatment Determine heat treat condition prior to welding on base metal or mech. testing Consider effects of welding on heat treat condition and mechanical properties Am e r i c a n We l d i n g So c i e t y
    25. 25. Module 6 - 25 Heat Treatment - 2 of 3 Heat Treatments For Steels: Preheating Stress Relieving Normalizing Annealing Quenching and Tempering Others Am e r i c a n We l d i n g So c i e t y
    26. 26. Module 6 - 26 Heat Treatment - 3 of 3 Heat Treatments For Stainless Steels: Preheating Stress Relieving Solution Annealing, Water Quench (Solution Treatment) Quenching and Tempering Others More on heat treating in Module 8 Am e r i c a n We l d i n g So c i e t y

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