Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
Essen
Vulkan-Verl.
2011
|
| Schriftenreihe: | Schriftenreihe des ISF
57 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 143 S. Ill., graph. Darst. 21 cm |
Internformat
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| 245 | 1 | 0 | |a Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates |c von Ali Faraz |
| 264 | 1 | |a Essen |b Vulkan-Verl. |c 2011 | |
| 300 | |a VIII, 143 S. |b Ill., graph. Darst. |c 21 cm | ||
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| 490 | 1 | |a Schriftenreihe des ISF |v 57 | |
| 502 | |a Zugl.: Dortmund, Techn. Univ., Diss., 2011 | ||
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Datensatz im Suchindex
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| adam_text | IMAGE 1
TABLE OF CONTENTS
ACRONYMS * * V
NOMENCLATURE VII
1 INTRODUCTION 1
2 SURVEY OF PREVIOUS AND CURRENT STATE-OF-THE-ART WORK 5
2.1 FRPS - THE MOST EMERGING COMPOSITES OF THE CURRENT TIME 5
2.2 MAIN OBJECTIVE OF MACHINING OF FRP COMPOSITES 6
2.3 DRILLING OF FRP COMPOSITES AND ITS IMPORTANCE 7
2.3.1 PROBLEMS AND CHALLENGES FACED IN DRILLING OF FRPS 7
2.3.2 DELAMINATION - THE MOST CRITICAL PROBLEM IN DRILLING OF FRPS 8
2.4 MATHEMATICAL MODELLING FOR DRILLING DELAMINATION 9
2.5 CONTRIBUTION OF DRILL CHISEL EDGE TO DELAMINATION 11
2.6 EFFECT OF TOOL WEAR ON DELAMINATION 12
2.7 RESEARCH AND DEVELOPMENT OF SPECIALISED TOOL DESIGNS AND GEOMETRIES
FOR MACHINING FRPS 15
2.8 MACROSCOPIC SHAPE AND EXTENT OF HOLE EXIT DELAMINATION 17
2.9 VARIOUS POSSIBLE ORTHOGONAL CUTTING/MACHINING MECHANISMS FOR MANY
DIFFERENT FIBRE ORIENTATIONS 18
3 RESEARCH MOTIVATION AND MAIN OBJECTIVES 21
4 EXPERIMENTAL TECHNIQUES AND DETAILS 23
4.1 SELECTED WORKPIECE MATERIALS 23
4.2 MACHINE TOOLS UTILISED IN THIS RESEARCH 24
4.3 DATA ACQUISITION, MEASUREMENT AND ANALYSES (EQUIPMENT AND
TECHNIQUES) 25 4.3.1 IN-PROCESS DRILLING (MECHANICAL) LOADS 25
4.3.2 QUANTIFYING EXTENT OF DELAMINATION 26
4.3.2.1 QUANTIFICATION CRITERION 26
4.3.2.2 QUANTIFICATION TECHNIQUE (MEASUREMENT) 28
4.3.3 DIGITAL HIGH SPEED VIDEOGRAPHY 30
4.3.4 WEAR MEASUREMENT TECHNIQUES 31
4.3.4.1 THE MAXIMUM WIDTH OF FLANK WEAR, VB^ 31
4.3.4.2 MAGNITUDE OF CUTTING EDGE ROUNDING, CER 32
4.4 EXPERIMENTAL SETUP, CUTTING TOOLS AND CONDITIONS 32
5 DRILLING OF WOVEN EPOXY GFRP LAMINATES USING CONVENTIONAL AND
SPECIALISED DRILLS 33
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/101080765X
DIGITALISIERT DURCH
IMAGE 2
TABLE OF CONTENTS
5.1 EXPERIMENTAL PROCEDURES 34
5.1.1 CHOSEN DRILL BITS, APPLIED CUTTING CONDITIONS AND EXPERIMENTAL
SETUP 34 5.1.2 CHARACTERISATION OF HOLE EXIT DELAMINATION 35
5.2 EXPERIMENTAL RESULTS AND DISCUSSIONS 36
5.2.1 IN-PROCESS PROFILES OF DRILLING MECHANICAL LOADS 36
5.2.2 VARIATION OF PEAK MECHANICAL LOADS (F, AND 7) WITH CUTTING SPEED (
VJ AND FEEDRATE ( /) 41
5.2.3 RESULTS ON QUANTITATIVE HOLE EXIT DELAMINATION 43
5.2.4 PRELIMINARY RESULTS ON THE USE OF A PREDRILLED PILOT-HOLE AND ITS
EFFECT ON EXIT DELAMINATION 45
5.2.5 QUALITATIVE INSPECTION OF EXIT DELAMINATION 48
5.3 SUMMARY AND CONCLUSIONS 48
6 FUNDAMENTAL INVESTIGATIONS ON DRILLING WOVEN EPOXY CFRP LAMINATES
USING UNCOATED CEMENTED CARBIDE DRILLS 51
6.1 EXPERIMENTAL PROCEDURES 52
6.1.1 DRILL BITS, CUTTING CONDITIONS AND EXPERIMENTAL SETUP 52
6.2 EXPERIMENTAL RESULTS 54
6.2.1 COMPARISON OF PEAK DRILLING THRUST FORCE F, AND TORQUE T FOR
VARIOUS DRILL BITS 54 6.2.2 VARIATION IN PEAK THRUST F, AND TORQUE T AT
VARIOUS CUTTING SPEEDS V C AND FEEDRATES/. 56
6.2.3 RESULTS ON QUANTITATIVE HOLE ENTRY AND EXIT DELAMINATION DF 64
6.2.4 QUALITATIVE ANALYSIS OF HOLE ENTRY AND EXIT DELAMINATION 71
6.3 DISCUSSIONS ON MAIN RESULTS 72
6.4 SUMMARY AND CONCLUSIONS 75
7 IN-SITU QUALITATIVE INSPECTION OF HOLE EXIT DELAMINATION 77
7.1 INTRODUCTION 77
7.1.1 PROPOSED SHAPE OF HOLE EXIT DELAMINATION IN THIS STUDY 77
7.1.2 EXTENT OF HOLE EXIT DELAMINATION 78
7.1.3 VARIOUS POSSIBLE CUTTING MECHANISMS FOR MANY DIFFERENT FIBRE
ORIENTATIONS DURING DRILLING 79
7.2 EXPERIMENTAL PROCEDURES 80
7.2.1 DRILL BITS, CUTTING CONDITIONS AND EXPERIMENTAL SETUP 80
7.3 EXPERIMENTAL RESULTS AND DISCUSSIONS 82
7.3.1 ELASTIC BULGING, APPEARANCE OF INITIAL MACRO CRACKS AND FIBRE
FAILURES 82 7.3.2 FLEXIBILITY OF UNCUT FIBRE-BUNDLES UNDER CYCLIC
IMPACTS OF DRILL CUTTING EDGES, AND TINY LOCALISED DELAMINATION PATTERNS
87
7.3.3 CRUDE ANALYSIS OF VARIOUS CUTTING MECHANISMS AT THE BOTTOM-MOST
PLY 91 7.4 SUMMARY AND CONCLUSIONS 93
8 SUBSEQUENT DRILLING ON PREDRILLED PILOT-HOLES: EFFECT OF DRILL CHISEL
EDGE ON DELAMINATION 95
IMAGE 3
TABLE OF CONTENTS
8.1 EXPERIMENTAL PROCEDURES 95
8.1.1 DRILL BITS, CUTTING CONDITIONS AND EXPERIMENTAL SETUP 95
8.2 EXPERIMENTAL RESULTS 97
8.2.1 INFLUENCE OF PILOT-HOLES ON DRILLING THRUST FORCE F, AND BOTH
TYPES OF QUANTITATIVE DELAMINATION DF RESULTS 97
8.2.2 INFLUENCE OF USE OF PILOT-HOLES ON DRILLING TORQUE T 109
8.3 DISCUSSIONS, SUMMARY AND CONCLUSIONS 110
9 CUTTING EDGE ROUNDING: AN IMPORTANT WEAR CHARACTERISTIC OF CARBIDE
DRILLS 113
9.1 INTRODUCTION 113
9.2 EXPERIMENTAL PROCEDURES 115
9.2.1 DRILL BITS USED, APPLIED CUTTING CONDITIONS AND EXPERIMENTAL SETUP
115 9.3 EXPERIMENTAL RESULTS AND DISCUSSIONS 115
9.3.1 VARIATION IN PEAK DRILLING MECHANICAL LOADS (F, AND T) 115
9.3.2 VARIATION OF QUANTITATIVE HOLE ENTRY AND EXIT DELAMINATION (DF)
116 9.3.3 PROGRESSION OF THE MAXIMUM WIDTH OF FLANK WEAR (VB MCA) 118
9.3.4 RESULTS ON CUTTING EDGE ROUNDING WEAR PROGRESSION (CER) 120
9.3.5 STATISTICAL VALIDATION OF CER BASED WEAR RESULTS WITH THAT OF VB
MA 122
9.3.6 QUALITATIVE COMPARISON OF FRESH AND WORN TOOL STATES 125
9.4 SUMMARY AND CONCLUSIONS 126
10 MAIN CONCLUSIONS AND OUTLOOK 127
REFERENCES 133
|
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| author | Faraz, Ali 1980- |
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| dewey-full | 668.494 |
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| dewey-ones | 668 - Technology of other organic products |
| dewey-raw | 668.494 |
| dewey-search | 668.494 |
| dewey-sort | 3668.494 |
| dewey-tens | 660 - Chemical engineering |
| discipline | Chemie / Pharmazie |
| format | Thesis Book |
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| spelling | Faraz, Ali 1980- Verfasser (DE-588)143723340 aut Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates von Ali Faraz Essen Vulkan-Verl. 2011 VIII, 143 S. Ill., graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Schriftenreihe des ISF 57 Zugl.: Dortmund, Techn. Univ., Diss., 2011 (DE-588)4113937-9 Hochschulschrift gnd-content Schriftenreihe des ISF 57 (DE-604)BV010915326 57 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=022487086&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Faraz, Ali 1980- Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates Schriftenreihe des ISF |
| subject_GND | (DE-588)4113937-9 |
| title | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates |
| title_auth | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates |
| title_exact_search | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates |
| title_full | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates von Ali Faraz |
| title_fullStr | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates von Ali Faraz |
| title_full_unstemmed | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates von Ali Faraz |
| title_short | Experimental study on delamination, mechanical loads and tool wear in drilling of woven composite laminates |
| title_sort | experimental study on delamination mechanical loads and tool wear in drilling of woven composite laminates |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=022487086&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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