Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Investigation of Anomalous Behavior in Metallic-Based Materials Under Compressive Loading
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Investigation of Anomalous Behavior in Metallic-Based Materials Under Compressive Loading
Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781729038048
Category :
Languages : en
Pages : 28
Book Description
An anomalous material response has been observed under the action of applied compressive loads in fibrous SiC/Ti (both Ti-6242 and Ti-15-3 alloys) and the monolithic nickel-base alloy IN-718 in the aged condition. The observed behavior is an increase, rather than a decrease, in the instantaneous Young's modulus with increasing load. This increase is small, but can be significant in yield surface determination tests, where an equivalent offset strain on the order of 10 micron(1 x 10(exp -6) m/m) is being used. Stiffening has been quantified by calculating offset strains from the linear elastic loading line. The offset strains associated with stiffening during compressive loading are positive and of the same order as the target offset strains in yield surface determination tests. At this time we do not have a reasonable explanation for this response nor can we identify a deformation mechanism that might cause it. On the other hand, we are not convinced that it is an artifact of the experimental procedure because a number of issues have been identified and seemingly ruled out. In fact, stiffening appears to be temperature dependent, since it decreases as the temperature increases. Gil, Christopher M. and Lissenden, Cliff J. and Lerch, Bradley A. Glenn Research Center RTOP 523-21-13...
Publisher:
ISBN: 9781729038048
Category :
Languages : en
Pages : 28
Book Description
An anomalous material response has been observed under the action of applied compressive loads in fibrous SiC/Ti (both Ti-6242 and Ti-15-3 alloys) and the monolithic nickel-base alloy IN-718 in the aged condition. The observed behavior is an increase, rather than a decrease, in the instantaneous Young's modulus with increasing load. This increase is small, but can be significant in yield surface determination tests, where an equivalent offset strain on the order of 10 micron(1 x 10(exp -6) m/m) is being used. Stiffening has been quantified by calculating offset strains from the linear elastic loading line. The offset strains associated with stiffening during compressive loading are positive and of the same order as the target offset strains in yield surface determination tests. At this time we do not have a reasonable explanation for this response nor can we identify a deformation mechanism that might cause it. On the other hand, we are not convinced that it is an artifact of the experimental procedure because a number of issues have been identified and seemingly ruled out. In fact, stiffening appears to be temperature dependent, since it decreases as the temperature increases. Gil, Christopher M. and Lissenden, Cliff J. and Lerch, Bradley A. Glenn Research Center RTOP 523-21-13...
Research & Technology 1998
Author:
Publisher: DIANE Publishing
ISBN: 1428918248
Category :
Languages : en
Pages : 203
Book Description
Publisher: DIANE Publishing
ISBN: 1428918248
Category :
Languages : en
Pages : 203
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1154
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1154
Book Description
Determination of Yield and Flow Surfaces for Inconel 718 Under Axial-Torsional Loading at Temperatures Up to 649 C
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Structures and Acoustics Division
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
Book Description
Nuclear Science Abstracts
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 978
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 978
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1090
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1090
Book Description
U.S. Government Research Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 206
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 206
Book Description