Fatigue life predictions of friction stir welded joints by using fracture mechanics methods:
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Düsseldorf
VDI-Verl.
2006
|
| Edition: | Als Ms. gedr. |
| Series: | Fortschrittberichte VDI
Reihe 18, Mechanik, Bruchmechanik ; 304 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Item Description: | Zugl.: Köln, Univ., Diss. |
| Physical Description: | X, 149 S. Ill., graph. Darst. |
| ISBN: | 318330418X |
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| adam_text | Titel: Fatigue life predictions of friction stir welded joints by using fracture mechanics methods
Autor: Ghidini, Tommaso
Jahr: 2006
Contents
Topic: Page:
1 Introduction 1
1.1 Introduction to theDamage Tolerance Philosophy 2
2 The Friction Stir Welding Process 6
2.1 Microstructure 8
2.2 Residual Stresses 13
2.3 Applications 17
2.4 Corrosion of FSWJoints IS
3 Fracture Mechanics Software 20
3.1 Theoretical and Physical Basis 20
3.1.1 Crack Growth Relationship for Constant Amplitude Loading 31
3.1.2 Crack Propagation under Variable Amplitude Loading 35
3.1.2.1 Generalized Willenborg Model 37
3.1.2.2 Modified Generalized Willenborg Model 39
3.1.2.3 Strip Yield Model 40
3.1.2.4 Closure Model 42
3.1.3 Crack Propagation in Welded Structures 43
3.1.3.1 Fracture MechanicalTreatment ofthe ResidualStresses 43
3.1.3.2 Measuring the Residual Stresses 48
3.1.3.3 Implementing the Residual Stresses in the Fracture Mechanics Software Packages 54
3.1.4 Criteria for Failure 55
3.1.5 Calculation ofthe Fatigue Life Using the Software 55
4 Goals of the Work 58
5 Experimental Procedure 60
5.1 Materials 61
5.2 Friction Stir Welding 61
5.2.1 Friction Stir Butt Welding 61
5.2.2 Friction Stir T Welding 63
5.3 TestSpedmens 65
5.3.1 SNFatigue Specimens 66
5.3.2 Fatigue Crack Propagation Specimens 61
5.4 Corrosion Treatment 69
5.5 Fatigue Testing 70
5.5.1 SN Fatigue Testing 70
5.5.2 Fatigue Crack Propagation Testing 70
5.5.2.1 Constant Amplitude Loading Testing 70
5.5.2.2 Variable Amplitude Loading Testing 71
6 Prediction of Fatigue Life and Fatigue Crack Propagation 75
6.1 Basic Assumptions 75
6.2 Fatigue Life Predictions of Un-corroded Material 76
6.3 Fatigue Life Prediction of Pre-corroded Material 83
6.3.1 Sensitivity of the Model 93
6.4 Fatigue Life Prediction of FSWT-Joint 97
6.4.1 Obtaining the Crack Growth Coefficients 98
6.4.2 FEM Model of the Joint 99
6.4.3 Sensitivity of the Model 103
6.5 Prediction of Fatigue Crack Propagation under CA and VA Loading 106
6.5.1 Measuring the Residual Stress Field 109
6.5.2 Fatigue Crack Growth Prediction of FSWMaterial 111
6.6 Prediction of Fatigue Crack Propagation under Flight Loading Conditions 114
6.6.1 Measuring the Residual Stress Field 122
6.6.2 Fatigue Crack Growth Prediction of FSW Material 125
7 Conclusions 132
8 References 134
|
| adam_txt |
Titel: Fatigue life predictions of friction stir welded joints by using fracture mechanics methods
Autor: Ghidini, Tommaso
Jahr: 2006
Contents
Topic: Page:
1 Introduction 1
1.1 Introduction to theDamage Tolerance Philosophy 2
2 The Friction Stir Welding Process 6
2.1 Microstructure 8
2.2 Residual Stresses 13
2.3 Applications 17
2.4 Corrosion of FSWJoints IS
3 Fracture Mechanics Software 20
3.1 Theoretical and Physical Basis 20
3.1.1 Crack Growth Relationship for Constant Amplitude Loading 31
3.1.2 Crack Propagation under Variable Amplitude Loading 35
3.1.2.1 Generalized Willenborg Model 37
3.1.2.2 Modified Generalized Willenborg Model 39
3.1.2.3 Strip Yield Model 40
3.1.2.4 Closure Model 42
3.1.3 Crack Propagation in Welded Structures 43
3.1.3.1 Fracture MechanicalTreatment ofthe ResidualStresses 43
3.1.3.2 Measuring the Residual Stresses 48
3.1.3.3 Implementing the Residual Stresses in the Fracture Mechanics Software Packages 54
3.1.4 Criteria for Failure 55
3.1.5 Calculation ofthe Fatigue Life Using the Software 55
4 Goals of the Work 58
5 Experimental Procedure 60
5.1 Materials 61
5.2 Friction Stir Welding 61
5.2.1 Friction Stir Butt Welding 61
5.2.2 Friction Stir T Welding 63
5.3 TestSpedmens 65
5.3.1 SNFatigue Specimens 66
5.3.2 Fatigue Crack Propagation Specimens 61
5.4 Corrosion Treatment 69
5.5 Fatigue Testing 70
5.5.1 SN Fatigue Testing 70
5.5.2 Fatigue Crack Propagation Testing 70
5.5.2.1 Constant Amplitude Loading Testing 70
5.5.2.2 Variable Amplitude Loading Testing 71
6 Prediction of Fatigue Life and Fatigue Crack Propagation 75
6.1 Basic Assumptions 75
6.2 Fatigue Life Predictions of Un-corroded Material 76
6.3 Fatigue Life Prediction of 'Pre-corroded Material 83
6.3.1 Sensitivity of the Model 93
6.4 Fatigue Life Prediction of FSWT-Joint 97
6.4.1 Obtaining the Crack Growth Coefficients 98
6.4.2 FEM Model of the Joint 99
6.4.3 Sensitivity of the Model 103
6.5 Prediction of Fatigue Crack Propagation under CA and VA Loading 106
6.5.1 Measuring the Residual Stress Field 109
6.5.2 Fatigue Crack Growth Prediction of FSWMaterial 111
6.6 Prediction of Fatigue Crack Propagation under Flight Loading Conditions 114
6.6.1 Measuring the Residual Stress Field 122
6.6.2 Fatigue Crack Growth Prediction of FSW Material 125
7 Conclusions 132
8 References 134 |
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| edition | Als Ms. gedr. |
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| indexdate | 2024-07-09T20:39:48Z |
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| isbn | 318330418X |
| language | English |
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| publishDate | 2006 |
| publishDateSearch | 2006 |
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| series | Fortschrittberichte VDI |
| series2 | Fortschrittberichte VDI : Reihe 18, Mechanik, Bruchmechanik |
| spelling | Ghidini, Tommaso Verfasser aut Fatigue life predictions of friction stir welded joints by using fracture mechanics methods Tommaso Ghidini Als Ms. gedr. Düsseldorf VDI-Verl. 2006 X, 149 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Fortschrittberichte VDI : Reihe 18, Mechanik, Bruchmechanik 304 Zugl.: Köln, Univ., Diss. Lebensdauer (DE-588)4034837-4 gnd rswk-swf Reibschweißen (DE-588)4133920-4 gnd rswk-swf Schweißverbindung (DE-588)4053878-3 gnd rswk-swf Materialermüdung (DE-588)4074631-8 gnd rswk-swf Schadensmechanik (DE-588)4194956-0 gnd rswk-swf Prognose (DE-588)4047390-9 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Schweißverbindung (DE-588)4053878-3 s Reibschweißen (DE-588)4133920-4 s Schadensmechanik (DE-588)4194956-0 s Materialermüdung (DE-588)4074631-8 s Lebensdauer (DE-588)4034837-4 s Prognose (DE-588)4047390-9 s DE-604 Fortschrittberichte VDI Reihe 18, Mechanik, Bruchmechanik ; 304 (DE-604)BV001902156 304 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=014824537&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Ghidini, Tommaso Fatigue life predictions of friction stir welded joints by using fracture mechanics methods Fortschrittberichte VDI Lebensdauer (DE-588)4034837-4 gnd Reibschweißen (DE-588)4133920-4 gnd Schweißverbindung (DE-588)4053878-3 gnd Materialermüdung (DE-588)4074631-8 gnd Schadensmechanik (DE-588)4194956-0 gnd Prognose (DE-588)4047390-9 gnd |
| subject_GND | (DE-588)4034837-4 (DE-588)4133920-4 (DE-588)4053878-3 (DE-588)4074631-8 (DE-588)4194956-0 (DE-588)4047390-9 (DE-588)4113937-9 |
| title | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| title_auth | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| title_exact_search | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| title_exact_search_txtP | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| title_full | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods Tommaso Ghidini |
| title_fullStr | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods Tommaso Ghidini |
| title_full_unstemmed | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods Tommaso Ghidini |
| title_short | Fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| title_sort | fatigue life predictions of friction stir welded joints by using fracture mechanics methods |
| topic | Lebensdauer (DE-588)4034837-4 gnd Reibschweißen (DE-588)4133920-4 gnd Schweißverbindung (DE-588)4053878-3 gnd Materialermüdung (DE-588)4074631-8 gnd Schadensmechanik (DE-588)4194956-0 gnd Prognose (DE-588)4047390-9 gnd |
| topic_facet | Lebensdauer Reibschweißen Schweißverbindung Materialermüdung Schadensmechanik Prognose Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=014824537&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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| work_keys_str_mv | AT ghidinitommaso fatiguelifepredictionsoffrictionstirweldedjointsbyusingfracturemechanicsmethods |