Author: Wolfgang DietzelPublisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Monitoring Stable Crack Growth
Author: Wolfgang DietzelMonitoring stable crack growth using a combined a.c., d.c. potential drop technique
Author: Wolfgang DietzelBack-Face Strain for Monitoring Stable Crack Extension in Precracked Flexure Specimens
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781719382274
Category :
Languages : en
Pages : 26
Book Description
Calibrations relating back-face strain to crack length in precracked flexure specimens were developed for different strain gage sizes. The functions were verified via experimental compliance measurements of notched and precracked ceramic beams. Good agreement between the functions and experiments occurred, and fracture toughness was calculated via several operational methods: maximum test load and optically measured precrack length; load at 2 percent crack extension and optical precrack length; maximum load and back-face strain crack length. All the methods gave vary comparable results. The initiation toughness, K(sub Ii) , was also estimated from the initial compliance and load.The results demonstrate that stability of precracked ceramics specimens tested in four-point flexure is a common occurrence, and that methods such as remotely-monitored load-point displacement are only adequate for detecting stable extension of relatively deep cracks. Salem, Jonathan A. and Ghosn, Louis J. Glenn Research Center FRACTURE STRENGTH; STRAIN GAGES; CRACK PROPAGATION; TOUGHNESS; DETECTION; CALIBRATING; CERAMICS; LOADS (FORCES); LENGTH; STABILITY
Stable Crack Growth Trajectories and Fracture Due to Interacting Cracks
Author: Manuchehr ShirmohamadiPublisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 124
Book Description
Mechanics of Crack Growth
Author: National Symposium on Fracture Mechanics (8th : 1974 : Brown University)Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 507
Book Description
Mechanics of Crack Growth
Author: J. R. RicePublisher: ASTM International
ISBN: 9780803105096
Category : Technology & Engineering
Languages : en
Pages : 516
Book Description
Critical Load Assessment Method for Stable Crack Growth Analysis
Author: HC. RheePublisher:
ISBN:
Category : Crack instability
Languages : en
Pages : 14
Book Description
A new systematic procedure has been developed for analyzing stable crack growth. In this method, the crack instability point can be predicted from a single J-l record, which is developed from a given material Jr curve and the J-integral related solutions resulting from stress analysis of a flawed structure. Here l represents the physical load applied to the structure. The development of the J-l relation that satisfies the equilibrium state of crack growth is so simple that hand calculator analysis is possible for complex structural geometries with available J-related stress analysis results.
Crack Growth Monitoring
Author: R. O. RitchieModel Analysis of Stable Crack Growth
Author: Earl David ReedyFracture Toughness and Slow - Stable Cracking
Author: Paul C. ParisPublisher: ASTM International
ISBN:
Category : Metals
Languages : en
Pages : 320
Book Description