A novel numerical approach and experimental study on the waviness defects in composite structures: 22 Tabellen
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| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | German |
| Published: |
Köln
DLR
2013
|
| Edition: | Als Ms. gedr. |
| Series: | DLR, Deutsches Zentrum für Luft- und Raumfahrt Forschungsbericht
2013,14 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XVII, 220 S. Ill., graph. Darst. |
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| 245 | 1 | 0 | |a A novel numerical approach and experimental study on the waviness defects in composite structures |b 22 Tabellen |c Imad Aldin Khattab |
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Record in the Search Index
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|---|---|
| adam_text | CONTENTS
1 INTRODUCTION
1 1 RATIONALE AND MOTIVATION 1
2 HYPOTHESES AND OUTLINE
2.1 HYPOTHESES OF THE PRESENT WORK 5
2.2 OUTLINE OF THE THESIS 7
3 THE STATE OF THE ART OF THE EFFECTS OF FIBRES AND PLIES UNDULATIONS
ON THE STIFFNESS AND STRENGTH
3.1 THE STATE OF THE ART 11
4 STIFFNESS ANALYSIS OF LAMINA AND LAMINATE WITH WAVINESS
4.1 INTRODUCTION 19
4.2 ANALYTICAL APPROACH 20
4.2.1 THEORETICAL BASIS AND CONCEPTS 20
4.2.2 THEORETICAL ANALYSIS OF THE STIFFNESS OF LAMINA WITH IN-PLANE
FIBRE WAVINESS 26
4.2.3 THEORETICAL ANALYSIS OF THE STIFFNESS OF LAMINATE WITH
OUT-OF-PLANE WAVINESS 32
4.2.4 REPRESENT THE WAVINESS GEOMETRY BY FOURIER SERIES FUNCTION 38
4.2.5 THEORETICAL ANALYSIS FOR STIFFNESS OF LAMINATE WITH 3D SURFACE
OUT-OF-PLANE
PLY WAVINESS 39
4.2.6 PARAMETRIC STUDIES ON ANALYTICAL APPROACH 44
4.3 FINITE ELEMENT APPROACH 51
4.3.1 THE PRINCIPLE OF THE FE APPROACH 55
4.3.2 FINITE ELEMENT MODELLING 57
4.3.3 EXTENSION OF FE MODEL FOR FIBRE VOLUME FRACTION EFFECT 61
4.3.4 THE CAPABILITY OF EF APPROACH 63
HTTP://D-NB.INFO/1037484517
4.3.5 THE ASSOCIATION BETWEEN THE FE APPROACH AND THE CLT ANALYSIS 67
4.4 PARAMETRIC CASE STUDIES ON FE APPROACH 71
4.4.1 COMPARISON CASE STUDIES BETWEEN ANALYTICAL AND FE APPROACHES 71
4.4.2 CASE STUDIES ON THE LIMITATION OF E-CLT 76
4.4.3 PARAMETRICAL STUDIES ON THE FINITE ELEMENT APPROACH 82
4.5 THE CONCLUSION OF THE STIFFNESS ANALYSIS OF LAMINA AND LAMINATE WITH
WAVINESS 94
5 STRENGTH ANALYSIS OF LAMINA AND LAMINATE WITH WAVINESS
5.1 INTRODUCTION 95
5.2 STRENGTH ANALYSIS OF LAMINA AND LAMINATE WITH WAVINESS 96
5.2.1 THE CONCEPTUAL FRAMEWORK 98
5 2.2 HASH N FAILURE CRITERION 100
5.2.3 A 3D HASHIN FAILURE CRITERIA IN STRAIN TERMS 103
5.3 A 3D DAMAGE MODEL BASED ON CONTINUUM DAMAGE MECHANICS (CDM) 107
5.3.1 DAMAGE VARIABLE 107
5.3.2 DAMAGE THRESHOLD 109
5.3.3 MULTIDIMENSIONAL DAMAGE AND EFFECTIVE SPACES 110
5.4 APPLICATIONS ON STRENGTH OF LAMINATE WITH WAVINESS 115
5.5 THE DISCUSSION OF THE RESULTS 117
5.6 APPLICATION OF STRENGTH IN X DIRECTION OF UD TENSION SPECIMEN WITH
PLANAR OUT-OF
-PLANE PLY WAVINESS 119
5.6.1 PROBLEM DESCRIPTION AND MATERIAL CHARACTERISTICS 120
5.6.2 THE CONSIDERATIONS OF FINITE ELEMENT MODEL 121
5.6.3 THE DISCUSSION OF THE RESULTS ON THE TENSION SPECIMEN WITH
WAVINESS 124
6 EXPERIMENTAL WORKS TO FABRICATE TENSION SPECIMENS WITH
CONTROLLED OUT-OF-PLANE WAVY PLIES
6.1 INTRODUCTION 139
6.2 LITERATURE REVIEW ON THE EXPERIMENTAL WORKS 140
6.3 THE PRINCIPLE OF RTM TECHNOLOGY 149
6.4 THE PROCESS OF MANUFACTURING TENSION SPECIMENS 151
6.4.1 COUPON SPECIMENS GEOMETRY AND MATERIALS 151
II
6.4.2 TWO-STEP METHOD (CO-CURING) (TSM) FOR HTA40/LY564 152
6.4.3 THE ADVANTAGES OF TSM APPROACH 156
6.4.4 CONSTRAINS ON SPECIMEN DIMENSIONS AND FABRICATION 158
6.4.5 QUALITY ASSURANCE TESTING 161
6.4.6 TENSION TESTS AND EVALUATIONS 164
6.4.7 DISCUSSION OF THE RESULTS 169
6.5 THE MANUFACTURING METHODOLOGY OF THIN SPECIMENS 173
6.5.1 STEP.1 174
6.5.2 STEP.2 174
6.5.3 STEP.3 175
6.6 EXPERIMENTAL TENSION TEST OF THIN SPECIMEN 178
6.6.1 THE PRINOEPLE OF ARAMIS [105] 179
6.6.2 STRAIN COMPUTATION BY ARAMIS 179
6.6.3 DISCUSSION OF THE RESULTS OF THE TENSION TEST OF THIN SPECIMENS
180
6.6.4 THE COMPARESION BETWEEN THE FE MODEL AND THE EXPERIMENTAL TEST OF
THE
TENSION SPECIMEN 185
7 CONCLUSION AND OUTLOOK
7.1 THE CONCLUSION 189
7.2 OUTLOOK 192
APPENDIX A 195
APPENDIX B 202
APPENDIX C 204
REFERENCES 214
III
|
| any_adam_object | 1 |
| author | Khattab, Imad Aldin 1969- |
| author_GND | (DE-588)1037935950 |
| author_facet | Khattab, Imad Aldin 1969- |
| author_role | aut |
| author_sort | Khattab, Imad Aldin 1969- |
| author_variant | i a k ia iak |
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| bvnumber | BV041203256 |
| classification_rvk | ZM 7020 |
| ctrlnum | (OCoLC)856867805 (DE-599)BVBBV041203256 |
| discipline | Werkstoffwissenschaften / Fertigungstechnik |
| edition | Als Ms. gedr. |
| format | Thesis Book |
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| id | DE-604.BV041203256 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T00:41:59Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-026178093 |
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| physical | XVII, 220 S. Ill., graph. Darst. |
| publishDate | 2013 |
| publishDateSearch | 2013 |
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| publisher | DLR |
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| series | DLR, Deutsches Zentrum für Luft- und Raumfahrt Forschungsbericht |
| series2 | Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt |
| spelling | Khattab, Imad Aldin 1969- Verfasser (DE-588)1037935950 aut A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen Imad Aldin Khattab Als Ms. gedr. Köln DLR 2013 XVII, 220 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Forschungsbericht / DLR, Deutsches Zentrum für Luft- und Raumfahrt 2013,14 Zugl.: Magdeburg, Univ., Diss., 2013 Mathematisches Modell (DE-588)4114528-8 gnd rswk-swf Kohlenstofffaserverstärkter Kunststoff (DE-588)4164540-6 gnd rswk-swf Versagen (DE-588)4258790-6 gnd rswk-swf Welligkeit Technische Oberfläche (DE-588)4468195-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Kohlenstofffaserverstärkter Kunststoff (DE-588)4164540-6 s Welligkeit Technische Oberfläche (DE-588)4468195-1 s Versagen (DE-588)4258790-6 s Mathematisches Modell (DE-588)4114528-8 s DE-604 DLR, Deutsches Zentrum für Luft- und Raumfahrt Forschungsbericht 2013,14 (DE-604)BV011758990 2013,14 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026178093&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Khattab, Imad Aldin 1969- A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen DLR, Deutsches Zentrum für Luft- und Raumfahrt Forschungsbericht Mathematisches Modell (DE-588)4114528-8 gnd Kohlenstofffaserverstärkter Kunststoff (DE-588)4164540-6 gnd Versagen (DE-588)4258790-6 gnd Welligkeit Technische Oberfläche (DE-588)4468195-1 gnd |
| subject_GND | (DE-588)4114528-8 (DE-588)4164540-6 (DE-588)4258790-6 (DE-588)4468195-1 (DE-588)4113937-9 |
| title | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen |
| title_auth | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen |
| title_exact_search | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen |
| title_full | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen Imad Aldin Khattab |
| title_fullStr | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen Imad Aldin Khattab |
| title_full_unstemmed | A novel numerical approach and experimental study on the waviness defects in composite structures 22 Tabellen Imad Aldin Khattab |
| title_short | A novel numerical approach and experimental study on the waviness defects in composite structures |
| title_sort | a novel numerical approach and experimental study on the waviness defects in composite structures 22 tabellen |
| title_sub | 22 Tabellen |
| topic | Mathematisches Modell (DE-588)4114528-8 gnd Kohlenstofffaserverstärkter Kunststoff (DE-588)4164540-6 gnd Versagen (DE-588)4258790-6 gnd Welligkeit Technische Oberfläche (DE-588)4468195-1 gnd |
| topic_facet | Mathematisches Modell Kohlenstofffaserverstärkter Kunststoff Versagen Welligkeit Technische Oberfläche Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026178093&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV011758990 |
| work_keys_str_mv | AT khattabimadaldin anovelnumericalapproachandexperimentalstudyonthewavinessdefectsincompositestructures22tabellen |