Cellular design for laser freeform fabrication:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Göttingen
Cuvillier
2010
|
| Edition: | 1. Aufl. |
| Series: | Schriftenreihe Lasertechnik
Bd. 4 |
| Subjects: | |
| Online Access: | Inhaltstext Inhaltsverzeichnis |
| Physical Description: | XXII, 273 S. Ill., graph. Darst. 21 cm |
| ISBN: | 9783869552736 |
Staff View
MARC
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| 245 | 1 | 0 | |a Cellular design for laser freeform fabrication |c von Olaf Rehme |
| 250 | |a 1. Aufl. | ||
| 264 | 1 | |a Göttingen |b Cuvillier |c 2010 | |
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| 490 | 1 | |a Schriftenreihe Lasertechnik |v Bd. 4 | |
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Record in the Search Index
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|---|---|
| adam_text |
IMAGE 1
CONTENTS
I ABSTRACT V
H ZUSAMMENFASSUNG VII
III ABBREVIATIONS IX
IV LIST OF SYMBOLS XI
V LIST OF FIGURES
***.**.**.****.***.*.*.**.***.****.*.*.***************.
XVII
VI LIST OF TABLES XXI
1 INTRODUCTION
*.******.*.****.*.***.******.*.******.******
1
2 CELLULAR DESIGN AND MANUFACTURING PROCESSES 3
2.1 CELLULAR MATERIALS 3
2.1.1 CLASSIFICATION 3
2.1.2 PRODUCT QUALITY OBJECTIVES 5
2.1.3 OCCURRENCE AND APPLICATIONS 6
2.1.4 MECHANICAL PROPERTIES 11
2.2 CONVENTIONAL FABRICATION PROCESSES FOR CELLULAR MATERIALS 39
2.2.1 OVERVIEW 39
2.2.2 PERIODIC CELLULAR MATERIALS: LATTICE AND TRUSS STRUCTURES 42
2.2.3 CONSTRAINTS OF EXISTING FABRICATION PROCESSES FOR CELLULAR
MATERIALS 45
2.3 SUMMARY 46
3 LASER FREEFORM FABRICATION
.
47
3.1 MOTIVATION FOR CELLULAR DESIGN WITH LASER FREEFORM FABRICATION 47
3.2 DEVELOPMENT OF LASER FREEFORM FABRICATION 49
3.2.1 TECHNOLOGICAL EVOLUTION 49
3.2.2 STATE-OF-THE-ART OF INDUSTRIAL PROCESSES 50
3.3 SELECTIVE LASER MELTING 51
3.3.1 SLM PRINCIPLE AND PROCESS CHARACTERISTICS 51
3.3.2 INFLUENCE PARAMETERS ON SLM 52
3.4 ANALYSIS AND ADVANCES OF SLM INFLUENCE PARAMETERS 54
3.4.1 PART GEOMETRY AND CAD DATA 54
3.4.2 MATERIAL 54
3.4.3 PROCESS 60
3.4.4 POST-PROCESSING 72
3.5 PRODUCT QUALITY AND MANUFACTURING COST AND TIME IN APPLICATIONS OF
SLM SOLIDS 73 3.5.1 DOMINATING INFLUENCE PARAMETERS IN SLM PROCESSES 73
3.5.2 QUALITY PROPERTIES OF SOLID SLM PARTS 75
3.5.3 APPLICATIONS 82
3.5.4 CONSIDERATIONS OF MANUFACTURING COST AND TIME 85
3.6 SUMMARY 86
I
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1001047397
DIGITALISIERT DURCH
IMAGE 2
CONTENTS
4 FUNDAMENTAL ANALYSIS OF CELLULAR PART DESIGN FOR SLM 87
4.1 PROCESS DEVELOPMENT AND PRECURSOR EXPERIMENTS 87
4.2 ANALYSIS AND ASSESSMENT OF PROCESS CONDITIONS 89
4.2.1 GENERAL INFLUENCE PARAMETERS 89
4.2.2 MATERIAL 90
4.2.3 SLM SYSTEM 92
4.3 APPROACH TO ASSESSMENT OF MECHANICAL PROPERTIES 97
4.4 SUMMARY ; 98
5 THEORETICAL ANALYSIS OF SLM CELLULARE 99
5.1 STRUCTURAL HYPOTHESES FOR ISOTROPIE CELLULAR MATERIALS 99
5.1.1 STRENGTH AND ELASTIC PROPERTIES OF LOW DENSITY CELLULAR MATERIALS
99
5.1.2 BENDING- AND STRETCH-DOMINATED BEHAVIOUR 104
5.1.3 STRENGTH AND ELASTIC PROPERTIES OF HIGH DENSITY CELLULAR MATERIALS
105
5.2 STRUCTURAL HYPOTHESES FOR ANISOTROPIC SLM LATTICE STRUCTURES 106
5.2.1 APPROACH TO A GENERALIZED SLM LATTICE STRUCTURE THEORY 106
5.2.2 ANISOTROPY OF SLM SOLIDS 108
5.2.3 CHARACTERIZATION OF ELASTIC DEFORMATION FOR SLM LATTICE STRUCTURES
109 5.2.4 CHARACTERIZATION OF PLASTIC DEFORMATION FOR SLM LATTICE
STRUCTURES 113 5.2.5 MATRIX STRUCTURAL ANALYSIS FOR LOW DENSITY SLM
LATTICE STRUCTURES 117 5.2.6 EFFECTIVE MATERIAL PROPERTIES FOR HIGH
DENSITY SLM LATTICE STRUCTURES 124
5.2.7 DETERMINATION OF RELATIVE DENSITY FOR SLM LATTICE STRUCTURES 125
5.2.8 GENERAL MODEL FOR SLM LATTICE STRUCTURES OF LOW AND HIGH RELATIVE
DENSITY 127
5.3 DEVELOPMENT OF SLM LATTICE STRUCTURE DESIGNS 128
5.3.1 GENERAL PRODUCIBILITY 128
5.3.2 TESSELATION OF 3D SPACE 131
5.3.3 SELECTED SLM LATTICE STRUCTURES 133
5.4 THEORETICAL ANALYSIS OF PRESELECTED SLM LATTICE STRUCTURES 136
5.4.1 EVALUATION OF EXPECTED CRITICAL RELATIVE DENSITIES 136
5.4.2 MATRIX STRUCTURAL ANALYSIS OF PRESELECTED SLM LATTICE STRUCTURES
139
5.5 SUMMARY 142
6 EXPERIMENTAL ANALYSIS OF SLM SOLIDS AND CELLULARS 143
6.1 MECHANICAL PROPERTIES OF SLM SOLIDS 143
6.2 PRODUCIBILITY OF SLM LATTICE STRUCTURES 148
6.2.1 MINIMUM POSITIVE FEATURE SIZE 148
6.2.2 STABILITY OF SLM LATTICE STRUCTURES 152
6.3 DEVELOPMENT OF TEST PROCEDURES 157
6.3.1 TEST UTILITIES, TEST CONDITIONS AND SAMPLE SIZES 157
6.3.2 COMPRESSION STRENGTH TESTS 159
IMAGE 3
CONTENTS
6.3.3 TENSILE STRENGTH TESTS 160
6.3.4 SHEAR TESTS 161
6.4 TEST OF SPECIFIC STRENGTH IN DEPENDENCE OF CELL TYPE 162
6.5 SELECTION OF CELL TYPES FOR TESTS IN DEPENDENCE OF CELL SIZE 169
6.6 TEST OF ELASTICITY IN DEPENDENCE OF CELL SIZE 171
6.6.1 ELASTIC COMPRESSION TESTS 171
6.6.2 ELASTIC SHEAR TESTS 173
6.7 TEST OF STRENGTH IN DEPENDENCE OF CELL SIZE 174
6.7.1 COMPRESSION STRENGTH TESTS 174
6.7.2 TENSILE STRENGTH TESTS 177
6.7.3 SHEAR TESTS 179
6.8 RESULTS DISCUSSION 179
6.8.1 COMPARISON TO LITERATURE RESULTS 179
6.8.2 COMPARISON TO THEORY 181
6.8.3 CONCLUSION 181
6.9 SUMMARY 182
7 DEVELOPMENT OF CELLULAR DESIGN FOR SLM PARTS.
. . 183
7.1 DEVELOPMENT OF SCALING LAWS FOR ENGINEERING DESIGN 183
7.1.1 CONVERSION OF RELATIVE DENSITY INTO THE MAIN DESIGN PARAMETERS 183
7.1.2 SCALING LAWS IN DEPENDENCY OF ASPECT RATIO IN THE LOW RELATIVE
DENSITY REGIME 184 7.1.3 SCALING LAWS IN DEPENDENCY OF ASPECT RATIO FOR
THE FULL RANGE OF RELATIVE DENSITIES 185
7.2 GENERAL DESIGN RULES FOR SLM LATTICE STRUCTURES AND FOR HYBRID PARTS
187 7.2.1 DESIGN RULES FOR STAND-ALONE SLM LATTICE STRUCTURES 187
7.2.2 DESIGN RULES FOR HYBRID PARTS 188
7.3 CELLULAR DESIGN FOR SLM LATTICE STRUCTURES IN MEDICAL IMPLANTS 190
7.3.1 ADVANTAGES OF SLM LATTICE STRUCTURES IN IMPLANT APPLICATIONS 190
7.3.2 EXAMPLE 1: OPTIMIZATION OF BENDING STIFFNESS OF A HIP
ENDOPROSTHESIS STEM 190 7.3.3 EXAMPLE 2: OPTIMIZATION OF BENDING
STIFFNESS OF A TIBIAL BASE PLATE 191 7.3.4 EXAMPLE 3: OPTIMIZATION OF
EXTENSIONAL STIFFNESS OF A TIBIAL BASE PLATE 192
7.3.5 EXAMPLE 4: VERIFICATION OF COMPRESSIVE YIELD STRENGTH OF A TIBIAL
BASE PLATE 192 7.3.6 EXAMPLE 5: OPTIMIZATION OF MANUFACTURING TIME AND
COST OF A TIBIAL BASE PLATE. 193
7.4 SUMMARY 193
8
CONCLUSION.
195
9 BIBLIOERADHV . . . . . » 197
10 APPENDICES
.^.~.
227
10.1 CELLULAR MATERIAL PROPERTIES 227
10.1.1 ACOUSTICAL PROPERTIES 227
10.1.2 MECHANICAL DAMPING PROPERTIES 230
III
IMAGE 4
CONTENTS
10.1.3 PERMEABILITY 231
10.1.4 THERMAL PROPERTIES 233
10.1.5 ELECTRICAL PROPERTIES 236
10.1.6 SPECIFIC SURFACE AREA 238
10.1.7 BUOYANCY 239
10.2 FABRICATION OF STOCHASTIC CELLULAR MATERIALS: FOAMS AND SPONGES 241
10.2.1 PRESSING FROM SOLID PHASE 241
10.2.2 FOAMING FROM SOLID PHASE 243
10.2.3 FOAMING FROM LIQUID PHASE 244
10.2.4 CASTING FROM LIQUID PHASE 247
10.2.5 DEPOSITION TECHNIQUES FROM VAPOR OR IONIC PHASE 248
10.3 SIMULATION RESULTS: RELATIVE DENSITIES AND COMPRESSIVE YIELD
STRENGTHS 250
10.4 AVERAGE STRUT DIAMETER IN DEPENDENCE OF MELT ENERGY 252
10.5 RESULTS FOR STABILITY OF SLM LATTICE STRUCTURES 255
10.6 RESULTS OF ELASTICITY IN DEPENDENCE OF CELL SIZE 261
10.7RESULTS OF COMPRESSIVE STRENGTH IN DEPENDENCE OF CELL SIZE 264
10.8 RESULTS OF TENSILE STRENGTH IN DEPENDENCE OF CELL SIZE 267 |
| any_adam_object | 1 |
| author | Rehme, Olaf 1971- |
| author_GND | (DE-588)141069260 |
| author_facet | Rehme, Olaf 1971- |
| author_role | aut |
| author_sort | Rehme, Olaf 1971- |
| author_variant | o r or |
| building | Verbundindex |
| bvnumber | BV037466554 |
| ctrlnum | (OCoLC)663472806 (DE-599)DNB1001047397 |
| dewey-full | 671.37 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 671 - Metalworking & primary metal products |
| dewey-raw | 671.37 |
| dewey-search | 671.37 |
| dewey-sort | 3671.37 |
| dewey-tens | 670 - Manufacturing |
| discipline | Werkstoffwissenschaften / Fertigungstechnik |
| edition | 1. Aufl. |
| format | Thesis Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV037466554 |
| illustrated | Illustrated |
| indexdate | 2024-12-10T13:01:16Z |
| institution | BVB |
| isbn | 9783869552736 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-022618401 |
| oclc_num | 663472806 |
| open_access_boolean | |
| owner | DE-29T |
| owner_facet | DE-29T |
| physical | XXII, 273 S. Ill., graph. Darst. 21 cm |
| publishDate | 2010 |
| publishDateSearch | 2010 |
| publishDateSort | 2010 |
| publisher | Cuvillier |
| record_format | marc |
| series | Schriftenreihe Lasertechnik |
| series2 | Schriftenreihe Lasertechnik |
| spelling | Rehme, Olaf 1971- Verfasser (DE-588)141069260 aut Cellular design for laser freeform fabrication von Olaf Rehme 1. Aufl. Göttingen Cuvillier 2010 XXII, 273 S. Ill., graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Schriftenreihe Lasertechnik Bd. 4 Zugl.: Hamburg, Techn. Univ., Diss., 2009 Selektives Laserschmelzen (DE-588)4799496-4 gnd rswk-swf Vielzellwerkstoff (DE-588)4499955-0 gnd rswk-swf Gitter (DE-588)4157374-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Vielzellwerkstoff (DE-588)4499955-0 s Gitter (DE-588)4157374-2 s Selektives Laserschmelzen (DE-588)4799496-4 s DE-604 Schriftenreihe Lasertechnik Bd. 4 (DE-604)BV035176702 4 X:MVB text/html http://deposit.dnb.de/cgi-bin/dokserv?id=3446807&prov=M&dok_var=1&dok_ext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=022618401&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Rehme, Olaf 1971- Cellular design for laser freeform fabrication Schriftenreihe Lasertechnik Selektives Laserschmelzen (DE-588)4799496-4 gnd Vielzellwerkstoff (DE-588)4499955-0 gnd Gitter (DE-588)4157374-2 gnd |
| subject_GND | (DE-588)4799496-4 (DE-588)4499955-0 (DE-588)4157374-2 (DE-588)4113937-9 |
| title | Cellular design for laser freeform fabrication |
| title_auth | Cellular design for laser freeform fabrication |
| title_exact_search | Cellular design for laser freeform fabrication |
| title_full | Cellular design for laser freeform fabrication von Olaf Rehme |
| title_fullStr | Cellular design for laser freeform fabrication von Olaf Rehme |
| title_full_unstemmed | Cellular design for laser freeform fabrication von Olaf Rehme |
| title_short | Cellular design for laser freeform fabrication |
| title_sort | cellular design for laser freeform fabrication |
| topic | Selektives Laserschmelzen (DE-588)4799496-4 gnd Vielzellwerkstoff (DE-588)4499955-0 gnd Gitter (DE-588)4157374-2 gnd |
| topic_facet | Selektives Laserschmelzen Vielzellwerkstoff Gitter Hochschulschrift |
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