Author: UK Briefing group on Dynamic Testing. Commission X-IIW.
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages :
Book Description
An Inter-laboratory Programme of Dynamic Fracture Toughness Tests
Author: UK Briefing group on Dynamic Testing. Commission X-IIW.
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages :
Book Description
Dynamic Fracture Toughness: Papers
Author: Welding Institute
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 364
Book Description
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 364
Book Description
Advances in Fracture Research
Author: D. Francois
Publisher: Elsevier
ISBN: 1483136752
Category : Technology & Engineering
Languages : en
Pages : 191
Book Description
Advances in Fracture Research, Volume 6, documents the proceedings of the 5th International Conference on Fracture (ICF5) held in Cannes, France, 29 March-3 April 1981. The conference was attended by 670 participants from 26 countries. The program consisted of plenary sessions with invited speakers, technical sessions with contributed papers, a poster session, and two round table discussions. This volume contains 14 papers that deal with topics such as advancements in fracture mechanics; the application of fracture mechanics in three areas: damage tolerance requirements for aircraft structures, toughness requirements for bridges and heat up and cool down schedule, and evaluation of in service NDE indications for nuclear pressure vessels; and the analysis of crack-tip stress and strain fields for stationary and growing cracks in inelastic solids under monotonic loading. Also included are papers on the impact of environment on fracture; the problem of fracture of large concrete structures; and microcracking in hydrogenated austenitic steels.
Publisher: Elsevier
ISBN: 1483136752
Category : Technology & Engineering
Languages : en
Pages : 191
Book Description
Advances in Fracture Research, Volume 6, documents the proceedings of the 5th International Conference on Fracture (ICF5) held in Cannes, France, 29 March-3 April 1981. The conference was attended by 670 participants from 26 countries. The program consisted of plenary sessions with invited speakers, technical sessions with contributed papers, a poster session, and two round table discussions. This volume contains 14 papers that deal with topics such as advancements in fracture mechanics; the application of fracture mechanics in three areas: damage tolerance requirements for aircraft structures, toughness requirements for bridges and heat up and cool down schedule, and evaluation of in service NDE indications for nuclear pressure vessels; and the analysis of crack-tip stress and strain fields for stationary and growing cracks in inelastic solids under monotonic loading. Also included are papers on the impact of environment on fracture; the problem of fracture of large concrete structures; and microcracking in hydrogenated austenitic steels.
Proceedings of the ... International Conference on Fracture
ASME Technical Papers
Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 128
Book Description
Introduction to Impact Engineering
Author: M. Macaulay
Publisher: Springer Science & Business Media
ISBN: 940093159X
Category : Science
Languages : en
Pages : 283
Book Description
We are all familiar with impact. Lesser impacts such as hammering a nail, cracking an egg or stubbing a toe are part of everyday life. More violent impacts such as those caused by car crashes or bullets are fortunately less common but are still well enough known to be taken for granted. Very violent impacts such as meteorites striking the earth are outside our personal experience but we are aware of them. Despite this, impacts remain mysterious. They occur too quickly for us to follow what is happening and the evidence they leave behind is often ambiguous. Over the last thirty years improvements in high speed instrumen tation and developments in computing have made them more comprehensible and an increasing amount of attention is being paid to the subject which is an area of expanding scientific and engineering research. A multi-disciplinary approach is not yet established and information is scattered in many places and expressed in a variety of jargons. In applied mathematics, impacts have provided interesting theoretical problems with elegant solutions but it has been difficult to check results experimentally. Impacts can change the behaviour of materials but similar changes can sometimes be produced in other ways and the underlying mechanisms are not clear. Empirical solutions to engineering problems have worked reasonably well but it is hard to know what to do if things go wrong.
Publisher: Springer Science & Business Media
ISBN: 940093159X
Category : Science
Languages : en
Pages : 283
Book Description
We are all familiar with impact. Lesser impacts such as hammering a nail, cracking an egg or stubbing a toe are part of everyday life. More violent impacts such as those caused by car crashes or bullets are fortunately less common but are still well enough known to be taken for granted. Very violent impacts such as meteorites striking the earth are outside our personal experience but we are aware of them. Despite this, impacts remain mysterious. They occur too quickly for us to follow what is happening and the evidence they leave behind is often ambiguous. Over the last thirty years improvements in high speed instrumen tation and developments in computing have made them more comprehensible and an increasing amount of attention is being paid to the subject which is an area of expanding scientific and engineering research. A multi-disciplinary approach is not yet established and information is scattered in many places and expressed in a variety of jargons. In applied mathematics, impacts have provided interesting theoretical problems with elegant solutions but it has been difficult to check results experimentally. Impacts can change the behaviour of materials but similar changes can sometimes be produced in other ways and the underlying mechanisms are not clear. Empirical solutions to engineering problems have worked reasonably well but it is hard to know what to do if things go wrong.
The Development of Standard Methods for Determining the Dynamic Fracture Toughness of Metallic Materials
Author: DF. Cannon
Publisher:
ISBN:
Category : Dynamic fracture toughness
Languages : en
Pages : 19
Book Description
A simple, reliable, and repeatable method has been developed for determining dynamic plane-strain fracture toughness using an on-specimen strain gage. This extends the range of the British Standard Method for Determination of the Dynamic Fracture Toughness of Metallic Materials (BS 6729) to include measurement at impact testing rates. Dynamic finite element computing was used to optimize the position of the gage on the specimen. In tests at low loading rates on Charpy specimens, good agreement was found between toughness values calculated from the applied load and the calibrated gage, and with those measured by the shadow optic caustic technique. At higher rates, several gage types and two adhesives were compared. A satisfactory method was developed for performing tests at high and low temperatures. The technique was applied to larger bend specimens of two steels, and a test program was conducted at seven laboratories to assess the influence of testing machine and instrumentation variables. From the results, a standard calibration and test procedure has been developed.
Publisher:
ISBN:
Category : Dynamic fracture toughness
Languages : en
Pages : 19
Book Description
A simple, reliable, and repeatable method has been developed for determining dynamic plane-strain fracture toughness using an on-specimen strain gage. This extends the range of the British Standard Method for Determination of the Dynamic Fracture Toughness of Metallic Materials (BS 6729) to include measurement at impact testing rates. Dynamic finite element computing was used to optimize the position of the gage on the specimen. In tests at low loading rates on Charpy specimens, good agreement was found between toughness values calculated from the applied load and the calibrated gage, and with those measured by the shadow optic caustic technique. At higher rates, several gage types and two adhesives were compared. A satisfactory method was developed for performing tests at high and low temperatures. The technique was applied to larger bend specimens of two steels, and a test program was conducted at seven laboratories to assess the influence of testing machine and instrumentation variables. From the results, a standard calibration and test procedure has been developed.
Paper
Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 602
Book Description
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 602
Book Description
Journal of Testing and Evaluation
Evaluation of Current Procedures for Dynamic Fracture-Toughness Testing
Author: WL. Server
Publisher:
ISBN:
Category : Crack propagation
Languages : en
Pages : 16
Book Description
Instrumented impact test requirements for impact velocity, inertial loading, time to fracture, and frequency response were developed as a part of a large testing program sponsored by the Electric Power Research Institute (EPRI). These test procedures relied heavily on current ASTM standards plus the composite experience of investigators throughout the world. This paper provides experimental verification of the EPRI developed procedures and clarifies some of the empirical relationships used in the procedures. The material investigated was a 4340 steel (Rc52) which was relatively insensitive to loading rate. Load-time information obtained simultaneously from an instrumented tup and strain-gaged specimen was analyzed for tests performed at various impact velocities. The results indicate that the EPRI developed procedures are conservative and allow reliable fracture-toughness measurements to be made.
Publisher:
ISBN:
Category : Crack propagation
Languages : en
Pages : 16
Book Description
Instrumented impact test requirements for impact velocity, inertial loading, time to fracture, and frequency response were developed as a part of a large testing program sponsored by the Electric Power Research Institute (EPRI). These test procedures relied heavily on current ASTM standards plus the composite experience of investigators throughout the world. This paper provides experimental verification of the EPRI developed procedures and clarifies some of the empirical relationships used in the procedures. The material investigated was a 4340 steel (Rc52) which was relatively insensitive to loading rate. Load-time information obtained simultaneously from an instrumented tup and strain-gaged specimen was analyzed for tests performed at various impact velocities. The results indicate that the EPRI developed procedures are conservative and allow reliable fracture-toughness measurements to be made.