Contributions to the R-curve behaviour of ceramic materials:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | German |
| Veröffentlicht: |
Karlsruhe
Kernforschungszentrum
1994
|
| Ausgabe: | Als Ms. gedr. |
| Schriftenreihe: | Kernforschungszentrum <Karlsruhe>: KfK
5291 |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Literaturverz. S. 189 - 195 |
| Beschreibung: | V, 216 S. graph. Darst. |
Internformat
MARC
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| 003 | DE-604 | ||
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| 008 | 950424s1994 gw d||| t||| 00||| ger d | ||
| 016 | 7 | |a 943982685 |2 DE-101 | |
| 035 | |a (OCoLC)75524230 | ||
| 035 | |a (DE-599)BVBBV010164659 | ||
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| 041 | 0 | |a ger | |
| 044 | |a gw |c DE | ||
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| 100 | 1 | |a Fett, Theo |d 1943- |e Verfasser |0 (DE-588)120719169 |4 aut | |
| 245 | 1 | 0 | |a Contributions to the R-curve behaviour of ceramic materials |c T. Fett |
| 250 | |a Als Ms. gedr. | ||
| 264 | 1 | |a Karlsruhe |b Kernforschungszentrum |c 1994 | |
| 300 | |a V, 216 S. |b graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Kernforschungszentrum <Karlsruhe>: KfK |v 5291 | |
| 500 | |a Literaturverz. S. 189 - 195 | ||
| 830 | 0 | |a Kernforschungszentrum <Karlsruhe>: KfK |v 5291 |w (DE-604)BV000904814 |9 5291 | |
| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=006750109&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-006750109 | |
Datensatz im Suchindex
| _version_ | 1808137666306244608 |
|---|---|
| adam_text |
CONTENTS
1.
PREFACE
.
1
2.
INTRODUCTION
.
2
3.
STAHLE
CRACK
PROPAGATION
AND
R-CURVES
.
4
3.1
DEFINITION
OF
THE
R-CURVE
.
4
3.2
INFLUENCE
OF
R-CURVES
ON
THE
FAILURE
OF
COMPONENTS
WITH
MACRO
CRACKS
AND
NATURAL
CRACKS
5
THEORETICAL
CONSIDERATIONS
ON
R-CURVES
.
8
4.
R-CURVES
CAUSED
BY
CRACK-FACE
BRIDGING
.
9
4.1
BRIDGING
STRESSES
.
9
4.1.1
BRIDGING
RELATIONS
FOR
FRICTION
INDUCED
STRESSES
.
10
4.1.2
SPRINGS
WITH
LIMITED
EXTENSIONS
.
13
4.2
A
MODEL
FOR
BRIDGING-STRESS
RELATIONS
.
15
4.2.1
CALCULATION
OF
DISPLACEMENTS
.
18
4.2.2
CALCULATION
OF
STRESSES
IN
THE
BRIDGING
ELEMENT
.
19
4.2.3
LOAD-DISPLACEMENT
CURVE
.
21
4.3
CALCULATION
OF
THE
BRIDGING
STRESS
INTENSITY
FACTOR
FOR
ONE-DIMENSIONAL
CRACKS
.
25
4.3.1
GENERAL
RESULTS
.
27
4.3.2
CONSTANT
LOAD
TESTS
.
28
4.3.3
CONTROLLED
FRACTURE
TEST
.
28
4.3.4
INFLUENCE
OF
BRIDGING
RELATIONS
ON
THE
SHAPE
OF
THE
R-CURVE
.
29
4.4
CALCULATION
OF
THE
BRIDGING
STRESS
INTENSITY
FACTOR
FOR
EMBEDDED
CIRCULAR
CRACKS
.
30
5.
R-CURVES
CAUSED
BY
PHASE
TRANSFORMATIONS
.
34
5.1
PHASE-TRANSFORMATION
ZONE
AT
THE
CRACK
TIP
.
34
5.1.1
WEAK
PHASE
TRANSFORMATIONS
.
34
5.1.2
PHASE
TRANSFORMATION
ZONES
FOR
STRONG
TRANSFORMATIONS
.
42
5.2
CALCULATION
OF
R-CURVES
.
47
5.2.1
STRESS
INTENSITY
FACTOR
.
47
5.2.2
STRESS
INTENSITY
FACTOR
AT
THE
ONSET
OF
CRACK
EXTENSION
.
48
5.2.3
THE
CRACK-EXTENSION
PHASE
.
50
5.3
CRACK
OPENING
DISPLACEMENTS
.
54
5.3.1
CRACK
OPENING
DISPLACEMENTS
FOR
NONPROPAGATED
CRACKS
.
57
5.3.2
CRACK
OPENING
DISPLACEMENTS
FOR
PROPAGATED
CRACKS
.
60
6.
ENERGY
RELEASE
RATE,
STRESS
INTENSITY
FACTORS
AND
COMPLLANCE
.
62
6.1
BASIC
RELATIONS
.
62
6.2
ENERGY
CONSIDERATIONS
.
64
6.2.1
DEFINITION
OF
THE
CRACK
DRIVING
FORCE
.
64
6.2.2
THE
CRACK
RESISTANCE
.
70
6.3
APPLICATION
OF
A
DUGDALE
MODEL
BY
EVANS
AND
MCMEEKING
.
73
6.4
R-CURVE
FOR
A
GRIFFITH
CRACK
WITH
CONSTANT
BRIDGING
STRESSES
.
76
6.4.1
A
SIMPLE
MODEL
FOR
THE
CRACK
SURFACE
LOADINGS
.
80
6.5
COMPLIANCE
IN
PRESENCE
OF
R-CURVE
EFFECTS
.
81
6.5.1
LOADING-POINT
COMPLIANCE
.
81
6.5.2
CRACK-MOUTH
COMPLIANCE
.
84
INFLUENCE
OF
R-CURVE
EFFECTS
ON
MECHANICAL
PROPERTIES
.
88
7.
INFLUENCE
OF
R-CURVE
EFFECTS
ON
THE
INERT
STRENGTH
.
89
7.1
R-CURVES
DUE
TO
BRIDGING
INTERACTIONS
.
89
7.1.1
THE
BRIDGING
STRESS
INTENSITY
FACTOR
.
91
7.1.2
CRACK
DEVELOPMENT
IN
BENDING
STRENGTH
TESTS
.
92
7.1.3
ESTIMATION
OF
BRIDGING
PARAMETERS
FROM
STRENGTH
MEASUREMENTS
.
95
8.
INFLUENCE
OF
R-CURVE
EFFECTS
ON
SUBCRITICAL
CRACK
GROWTH
.
97
8.1
GENERAL
INFLUENCE
OF
R-CURVE
EFFECTS
ON
LIFETIMES
IN
STATIC
TESTS
.
97
8.2
A
DETAILLED
ANALYSIS
OF
THE
INFLUENCE
OF
BRIDGING
INTERACTIONS
.
100
8.2.1
CRACK
PROPAGATION
UNDER
CONSTANT
LOAD
.
101
8.2.2
DISCUSSION
.
106
IV
9.
INFLUENCE
CF
R-CURVE
EFFECTS
ON
CYCLIC
FATIGUE
.
111
9.1
EXPERIMENTAL
FACTS
.
111
9.2
THEORETICAL
CONSIDERATIONS
.
113
10.
INFLUENCE
OF
R-CURVE
EFFECTS
ON
THERMAL
SHOCK
BEHAVIOUR
.
119
10.1
GENERAL
REMARKS
.
119
10.2
EXPERIMENTAL
RESULTS
.
121
10.2.1
EXPERIMENTAL
AND
THEORETICAL
K/R-CURVES
FOR
THERMAL
SHOCK
.
121
10.2.2
CONCLUSIONS
.
123
11.
INFLUENCE
OF
BRLDGING
STRESSES
ON
KNOOP-CRACKS
.
125
DETERMINATION
OF
R-CURVES
AND
BRIDGING
STRESSES
.
131
12.
MEASUREMENT
OF
R-CURVES
IN
STABLE
CRACK
GROWTH
TESTS
.
132
12.1
DEFINITIONS
OF
SEVERAL
STRESS
INTENSITY
FACTORS
.
132
12.2
DETERMINATION
OF
R-CURVES
VIA
COMPLIANCE
.
138
12.2.1
TESTING
DEVICES
.
138
12.2.2
EVALUATION
OFTHE
LOAD-DISPLACEMENT
CURVE
.
139
12.3
RESULTS
FOR
SOME
CERAMICS
.
143
12.4
AN
EXPERIMENTAL
PROCEDURE
FOR
THE
DETERMINATION
OFK/
0
.
144
12.5
PROPOSAL
FOR
CALCULATION
OFTHE
R-CURVE
FROM
MEASURED
LOAD-DISPLACEMENT
CURVES
.
146
12.5.1
BASIC
CONSIDERATIONS
.
146
12.5.2
APPLICATION
OF
A
POWER
SERIES
PROCEDURE
.
146
12.5.3
SPECIAL
SET-UPS
REDUCING
THE
COSTS
OF
COMPUTATION
.
149
12.5.4
APPLICATION
OF
STEP-SHAPED
STRESS
DISTRIBUTIONS
.
149
12.5.5
AN
EXAMPLE
OF
R-CURVE
DETERMINATION
.
150
12.6
DETERMINATION
OF
CRACK
RESISTANCE
BY
OPTICAL
CRACK
LENGTH
MEASUREMENT
.
155
13.
METHODS
FOR
THE
DETERMINATION
OF
BRIDGING
STRESSES
.
156
13.1
DETERMINATION
OF
BRIDGING
STRESS
PARAMETERS
FOR
A
GIVEN
RELATION
.
156
13.1.1
DETERMINATION
OF
PARAMETERS
FOR
THE
BRIDGING
STRESS
RELATION
.
157
13.1.2
EVALUATION
OF
BRIDGING
PARAMETERS
FROM
CONSTANT
LOAD
TESTS
.
162
13.2
DETERMINATION
OF
BRIDGING
STRESSES
FROM
CRACK
PROFILES
.
167
V
13.2.1
THE
WEIGHT
FUNCTION
METHOD
.
167
13.2.2
FRACTURE
MECHANICAL
EVALUATION
OF
COD-MEASUREMENTS
.
171
13.2.3
NUMERICAL
PROCEDURES
FOR
THE
EVALUATION
OF
CRACK
PROFILE
MEASUREMENTS
.
172
13.2.4
DISCUSSION
OF
RESULTS
.
177
14.
DIFFERENT
R-CURVES
FOR
MACROSCOPIC
AND
TNLCROSCOPIC
CRACKS?
.
182
14.1
EXPERIMENTAL
FINDINGS
.
182
14.2
FRACTURE-MECHANICAL
MODEL
.
183
14.3
MATERIALS
WITHOUT
SUBCRITICAL
CRACK
EXTENSION
.
185
14.4
MATERIALS
WITH
SUBCRITICAL
CRACK
EXTENSION
.
188
15.
REFERENCES
.
189
APPENDIX
A.
WEIGHT
FUNCTIONS
.
196
A.1
WEIGHT
FUNCTION
FOR
REMOTE
TRACTIONS
.
196
A.2
WEIGHT
FUNCTION
FOR
THE
RCT-SPECIMEN
.
199
A.3
AVERAGED
BRIDGING
STRESS
INTENSITY
FACTORS
FOR
AN
EMBEDDED
ELLIPTICAL
CRACK
.
202
A.4
COEFFICIENTS
FOR
THE
COMPLIANCE
POLYNOMIALS
.
203
A.5
INTEGRALS
FOR
THE
EVALUATION
OF
LOAD-DISPLACEMENT
CURVES
.
203
APPENDIX
B.
STRENGTH
OF
UNCRACKED
BODIES
.
206
B.1
FAILURE
OF
BRITTLE
MATERIALS
UNDER
SINGULAER
STRESSES
.
206
B.1.1
ASSESSMENT
OF
SINGULAER
STRESSES
.
206
B.1.2
BRIDGING
STRESS
MODEL
AND
CRACK
OPENING
DISPLACEMENT
.
208
B.1.3
NUMERICAL
TREATMENT
.
210
B.2
NOMENCLATURE
.
215
VI |
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| illustrated | Illustrated |
| indexdate | 2024-08-23T00:54:10Z |
| institution | BVB |
| language | German |
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| series2 | Kernforschungszentrum <Karlsruhe>: KfK |
| spelling | Fett, Theo 1943- Verfasser (DE-588)120719169 aut Contributions to the R-curve behaviour of ceramic materials T. Fett Als Ms. gedr. Karlsruhe Kernforschungszentrum 1994 V, 216 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Kernforschungszentrum <Karlsruhe>: KfK 5291 Literaturverz. S. 189 - 195 Kernforschungszentrum <Karlsruhe>: KfK 5291 (DE-604)BV000904814 5291 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=006750109&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Fett, Theo 1943- Contributions to the R-curve behaviour of ceramic materials Kernforschungszentrum <Karlsruhe>: KfK |
| title | Contributions to the R-curve behaviour of ceramic materials |
| title_auth | Contributions to the R-curve behaviour of ceramic materials |
| title_exact_search | Contributions to the R-curve behaviour of ceramic materials |
| title_full | Contributions to the R-curve behaviour of ceramic materials T. Fett |
| title_fullStr | Contributions to the R-curve behaviour of ceramic materials T. Fett |
| title_full_unstemmed | Contributions to the R-curve behaviour of ceramic materials T. Fett |
| title_short | Contributions to the R-curve behaviour of ceramic materials |
| title_sort | contributions to the r curve behaviour of ceramic materials |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=006750109&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000904814 |
| work_keys_str_mv | AT fetttheo contributionstothercurvebehaviourofceramicmaterials |