Fatigue Crack Closure Evaluation Under Constant Amplitude and Spectrum Loading PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Fatigue Crack Closure Evaluation Under Constant Amplitude and Spectrum Loading PDF full book. Access full book title Fatigue Crack Closure Evaluation Under Constant Amplitude and Spectrum Loading by BK. Parida. Download full books in PDF and EPUB format.
Author: BK. Parida
Publisher:
ISBN:
Category : Alkali-aggregate reactions
Languages : en
Pages : 10
Get Book Here
Book Description
Fatigue crack growth behavior of through-the-thickness cracks emanating from the notch root in an aluminum alloy was investigated with particular emphasis on the evaluation of crack closure and its effects on fatigue crack growth rate. The tests were performed on SE(T) specimens both under constant amplitude (CA) and spectrum (modified FALSTAFF) loads. The near-tip strain measurement method was used for crack closure estimation in the short and long crack ranges. An attempt was also made to determine the crack closure value corresponding to the crack-tip shielding through fractographic analysis.
Author: BK. Parida
Publisher:
ISBN:
Category : Alkali-aggregate reactions
Languages : en
Pages : 10
Get Book Here
Book Description
Fatigue crack growth behavior of through-the-thickness cracks emanating from the notch root in an aluminum alloy was investigated with particular emphasis on the evaluation of crack closure and its effects on fatigue crack growth rate. The tests were performed on SE(T) specimens both under constant amplitude (CA) and spectrum (modified FALSTAFF) loads. The near-tip strain measurement method was used for crack closure estimation in the short and long crack ranges. An attempt was also made to determine the crack closure value corresponding to the crack-tip shielding through fractographic analysis.
Author: Ralph Ivan Stephens
Publisher: ASTM International
ISBN:
Category : Alloys
Languages : en
Pages : 345
Get Book Here
Book Description
Author: R. Craig McClung
Publisher: ASTM International
ISBN: 0803126115
Category : Fracture mechanics
Languages : en
Pages : 487
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
Get Book Here
Book Description
Author: Wolf Elber
Publisher: ASTM International
ISBN: 0803109962
Category : Fracture mechanics
Languages : en
Pages : 671
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Get Book Here
Book Description
A concept based on the crack-closure phenomenon was developed to replace random load spectra with constant amplitude loading in both analysis and tests. The maximum load and the crack opening load in the constant amplitude loading are chosen to be equal to those for the spectrum, so that both crack growth mode and the crack length at failure are equivalent to those under random load spectra. The number of cycles of constant- amplitude loading is chosen so that the amount of crack growth is equal to that due to a given sequence or block of the random spectrum loading. The concept was tested experimentally after predicting the equivalent number of constant-amplitude cycles for six different random load sequences. The agreement between predictions and test results was good.
Author: SG. Berge
Publisher:
ISBN:
Category : Crack closure
Languages : en
Pages : 22
Get Book Here
Book Description
Fatigue crack growth behavior of Ti-62222 in sheet form was investigated at three temperatures under various load histories with a specific emphasis on crack opening measurements and mechanisms. Constant-amplitude R = 0.1 near-threshold results showed that based upon applied ?K, fatigue crack growth rates were lower at the two temperature extremes in comparison with those at room temperature. Based upon ?Keff, a moderate temperature effect was observed. The various shifts in the ?Keff curves were a result of different controlling crack closure mechanisms at each temperature. Single tensile overloads at 2.5 x Kmax produced a delay in fatigue crack growth and was most significant at -54°C. Remote crack opening measurements showed no appreciable change during the delay period due to the small region along the crack front that experienced crack closure. Near crack tip opening measured for various combinations of overloads, underloads, and constant ?K at 25°C revealed a general trend for higher near tip opening following a tensile overload. However, a sufficient number of measurements were inconsistent and thus only minimal confidence could be placed with the method. Scanning electron microscopy was used to evaluate surface fatigue crack growth profiles and fatigue crack growth fracture surface morphology.
Author: Michael R. Mitchell
Publisher: ASTM International
ISBN: 0803114230
Category : Fracture mechanics
Languages : en
Pages : 495
Get Book Here
Book Description
Twenty-seven papers from fatigue researchers and practitioners review in detail recent progress in the development of methods to predict fatigue performance of materials and structures and to assess the extent to which these new methods are finding their way into practice. The papers, from the ASTM
Author: James C. Newman (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Get Book Here
Book Description
