Author: MG. Castelli
Publisher:
ISBN:
Category : Coefficient of thermal expansion
Languages : en
Pages : 20
Book Description
A detailed experimental investigation was performed at a single maximum cyclic stress (?max) level to physically characterize the progression of thermomechanical fatigue (TMF) damage in continuously reinforced [0°] SCS-6/TIMETAL 21S, a titanium matrix composite. In-phase (IP) and out-of-phase (OP) loadings were investigated at ?max = 1000 MPa with a temperature cycle from 150 to 650°C. Damage progression, in terms of macroscopic property degradation, was experimentally quantified through an advanced TMF test methodology that incorporates explicit measurements of the isothermal static moduli at the TMF temperature extremes and the coefficient of thermal expansion (CTE) as functions of the TMF cycles. Detailed characterization of the physical damage progression at the micro-structural level was performed by interrupting multiple TMF tests at various stages of mechanical property degradation and analyzing the microstructure through extensive destructive metallography. Further, the extent of damage was also quantified through residual static strength measurements. Results indicated that damage initiation occurred very early in cyclic life (N
Characterization of Damage Progression in SCS-6/TIMETAL 21S [0]4 Under Thermomechanical Fatigue Loading
Author: MG. Castelli
Publisher:
ISBN:
Category : Coefficient of thermal expansion
Languages : en
Pages : 20
Book Description
A detailed experimental investigation was performed at a single maximum cyclic stress (?max) level to physically characterize the progression of thermomechanical fatigue (TMF) damage in continuously reinforced [0°] SCS-6/TIMETAL 21S, a titanium matrix composite. In-phase (IP) and out-of-phase (OP) loadings were investigated at ?max = 1000 MPa with a temperature cycle from 150 to 650°C. Damage progression, in terms of macroscopic property degradation, was experimentally quantified through an advanced TMF test methodology that incorporates explicit measurements of the isothermal static moduli at the TMF temperature extremes and the coefficient of thermal expansion (CTE) as functions of the TMF cycles. Detailed characterization of the physical damage progression at the micro-structural level was performed by interrupting multiple TMF tests at various stages of mechanical property degradation and analyzing the microstructure through extensive destructive metallography. Further, the extent of damage was also quantified through residual static strength measurements. Results indicated that damage initiation occurred very early in cyclic life (N
Publisher:
ISBN:
Category : Coefficient of thermal expansion
Languages : en
Pages : 20
Book Description
A detailed experimental investigation was performed at a single maximum cyclic stress (?max) level to physically characterize the progression of thermomechanical fatigue (TMF) damage in continuously reinforced [0°] SCS-6/TIMETAL 21S, a titanium matrix composite. In-phase (IP) and out-of-phase (OP) loadings were investigated at ?max = 1000 MPa with a temperature cycle from 150 to 650°C. Damage progression, in terms of macroscopic property degradation, was experimentally quantified through an advanced TMF test methodology that incorporates explicit measurements of the isothermal static moduli at the TMF temperature extremes and the coefficient of thermal expansion (CTE) as functions of the TMF cycles. Detailed characterization of the physical damage progression at the micro-structural level was performed by interrupting multiple TMF tests at various stages of mechanical property degradation and analyzing the microstructure through extensive destructive metallography. Further, the extent of damage was also quantified through residual static strength measurements. Results indicated that damage initiation occurred very early in cyclic life (N
Characterization of Damage Progression in SCS-6/Timetal 21S (0)4 Under Thermomechanical Fatigue Loadings
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Thermomechanical Fatigue Damage/failure Mechanisms in SCS-6/Timetal 21S (0/90)s Composite
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 548
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 548
Book Description
Thermomechanical Fatigue Damage/Failure Mechanisms In SCS-6/Timetal 21S (0/90)S Composi, (NASA-CR-191115), JUN. 1994
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An Advanced Test Technique to Quantify Thermomechanical Fatigue Damage Accumulation in Composite Materials
Author: Michael G. Castelli
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
International Aerospace Abstracts
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1016
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1016
Book Description
Metals Abstracts
Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1650
Book Description
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1650
Book Description
Investigation of Fatigue Damage Mechanisms in a Metal Matrix Composite Under Elevated Temperature
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
This study investigated the fatigue damage initiation and progression in SCS-6/Ti-15-3 under an environment of fatigue loading at isothermal temperature. This program included two parts. First, an 808 Ultimate Tensile Strength system was set up to accommodate testing at two frequencies of 2.0 and 0.0208 cps at a constant temperature of 427 deg C. Second, at intervals during the load cycle process, the test specimens were characterized by establishing damage parameters based on changing modulus of elasticity, average strain, strain range, and ultimate tensile strength. Damage progression was documented in the form of failure of the fiber-matrix interface, matrix cracking, fiber breaking, and debonding of the fibers. Crack initiation locations and growth patterns were peculiar to specific test conditions of frequency and stress level. Also, analysis of the fatigued specimens and test data revealed matrix failure mechanisms ranging from ductile failure to cleavage fracture. The results of this study clearly show that temperature, frequency as well as stress levels are important design considerations for this composite in fatigue loading applications.
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
This study investigated the fatigue damage initiation and progression in SCS-6/Ti-15-3 under an environment of fatigue loading at isothermal temperature. This program included two parts. First, an 808 Ultimate Tensile Strength system was set up to accommodate testing at two frequencies of 2.0 and 0.0208 cps at a constant temperature of 427 deg C. Second, at intervals during the load cycle process, the test specimens were characterized by establishing damage parameters based on changing modulus of elasticity, average strain, strain range, and ultimate tensile strength. Damage progression was documented in the form of failure of the fiber-matrix interface, matrix cracking, fiber breaking, and debonding of the fibers. Crack initiation locations and growth patterns were peculiar to specific test conditions of frequency and stress level. Also, analysis of the fatigued specimens and test data revealed matrix failure mechanisms ranging from ductile failure to cleavage fracture. The results of this study clearly show that temperature, frequency as well as stress levels are important design considerations for this composite in fatigue loading applications.
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 696
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 696
Book Description