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Proceedings Papers

Modeling of Inelastic Metal Matrix Composite Response Under Multiaxial Loading

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Jalees Ahmad, Theodore Nicholas
Proc. ASME. IMECE96, Aerospace and Materials, 311-323, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0487
https://doi.org/10.1115/IMECE1996-0487
View Paper titled, Modeling of Inelastic Metal Matrix Composite Response Under Multiaxial Loading
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Topics: Composite materials, Deformation, Flow (Dynamics), Metal matrix composites, Metals, Modeling, Stress analysis (Engineering)
Proceedings Papers

Life Prediction of Metal Matrix Composites: A Comparison of Different Matrix Constitutive Relations

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Jalees Ahmad, Unnikrishnan Santhosh
Proc. ASME. IMECE98, Recent Advances in Mechanics of Aerospace Structures and Materials, 97-108, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0366
https://doi.org/10.1115/IMECE1998-0366
View Paper titled, Life Prediction of Metal Matrix Composites: A Comparison of Different Matrix Constitutive Relations
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Topics: Constitutive equations, Metal matrix composites, Fibers, Deformation, Composite materials, Damage, Residual stresses, Stress, Finite element analysis, Fracture (Materials)
Proceedings Papers

Prediction of Metal Matrix Composite Response to Multiaxial Stresses

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Jalees Ahmad, Golam M. Newaz, Theodore Nicholas
Proc. ASME. IMECE98, Recent Advances in Mechanics of Aerospace Structures and Materials, 43-59, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0359
https://doi.org/10.1115/IMECE1998-0359
View Paper titled, Prediction of Metal Matrix Composite Response to Multiaxial Stresses
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Topics: Metal matrix composites, Stress, Composite materials, Damage, Deformation, Design, Finite element analysis, Stress analysis (Engineering)
Proceedings Papers

An Approach for MMC Component Design

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Jalees Ahmad, Unnikrishnan Santhosh, Golam M. Newaz, Theodore Nicholas
Proc. ASME. IMECE99, Advances in Aerospace Materials and Structures, 165, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-0146
https://doi.org/10.1115/IMECE1999-0146
View Paper titled, An Approach for MMC Component Design
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Topics: Design, Metal matrix composites, Damage, Deformation, Stress, Modeling, Fibers, Titanium, Composite materials, Rotors
Journal Articles

An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite

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Michael J. Presby, Manigandan Kannan, Gregory N. Morscher, Cody Godines, Amirhossein Eftekharian, Jalees Ahmad, Frank Abdi, Sung R. Choi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2020, 142(4): 041027.
Paper No: GTP-19-1312
https://doi.org/10.1115/1.4044490
Published Online: February 18, 2020
View Articletitled, An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite
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Topics: Bending (Stress), Fracture (Materials), Fracture toughness, Testing, Ceramic matrix composites
Proceedings Papers

CMC Mode II Crack Growth Resistance Prediction of ASTM Specimen and Test Validation

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Frank Abdi, Cody Godines, Michael J. Presby, Amir Eftekharian, Jalees Ahmad, Sung Choi, Gregory N. Morscher, Steve Gonczy, Jun Shi
Proc. ASME. GT2019, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A011, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90985
https://doi.org/10.1115/GT2019-90985
View Paper titled, CMC Mode II Crack Growth Resistance Prediction of ASTM Specimen and Test Validation
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Topics: Adhesives, ASTM International, Ceramic matrix composites, Density, Design, Failure, Failure analysis, Fracture (Materials), Fracture toughness
Proceedings Papers

An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite

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Michael J. Presby, K. Manigandan, Gregory N. Morscher, Cody Godines, Amir Eftekharian, Jalees Ahmad, Frank Abdi, Sung R. Choi
Proc. ASME. GT2019, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A001, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90031
https://doi.org/10.1115/GT2019-90031
View Paper titled, An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite
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Topics: Bending (Stress), Ceramic matrix composites, Composite materials, Delamination, Fracture (Materials), Fracture toughness, Silicon carbide ceramics
Proceedings Papers

Development of ASTM Test Standards for the Mode I Interlaminar Fracture Toughness (G Ic --Crack Growth Resistance) of Ceramic Matrix Composites

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Frank Abdi, Jalees Ahmad, Saber DorMohammadi, Cody Godines, Stephen Gonczy, Rabih Mansour, Gregory N. Morscher, Sung Choi, Jun Shi, Greg Ojard
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A014, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77147
https://doi.org/10.1115/GT2018-77147
View Paper titled, Development of ASTM Test Standards for the Mode I Interlaminar Fracture Toughness (G Ic --Crack Growth Resistance) of Ceramic Matrix Composites
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Topics: ASTM International, Ceramic matrix composites, Fracture (Materials), Fracture toughness, High temperature, Wedges, Aircraft, Alloys, Bonding, Cantilever beams
Proceedings Papers

Crack Growth Resistance of Ceramic Matrix Composites and Anisotropic Stiffness Prediction/Measurement

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Cody Godines, Saber DorMohammadi, Jalees Ahmad, Rabih Mansour, Gregory N. Morscher, Sung Choi, Frank Abdi
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A013, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77133
https://doi.org/10.1115/GT2018-77133
View Paper titled, Crack Growth Resistance of Ceramic Matrix Composites and Anisotropic Stiffness Prediction/Measurement
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Topics: Anisotropy, Ceramic matrix composites, Fracture (Materials), Stiffness, Damage, Failure, Simulation, Temperature, Wedges, Acoustic emissions
Proceedings Papers

Crack Growth Resistance of CMC Attachment Element and Turbine Joint in Aircraft Engines

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Frank Abdi, Saber DorMohammadi, Jalees Ahmad, Cody Godines, Gregory N. Morscher, Sung Choi, Rabih Mansour, Steve Gonczy, Greg Ojard
Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A008, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65089
https://doi.org/10.1115/GT2017-65089
View Paper titled, Crack Growth Resistance of CMC Attachment Element and Turbine Joint in Aircraft Engines
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Topics: Aircraft engines, Ceramic matrix composites, Fracture (Materials), Turbines, Damage, Blocks (Building materials), Delamination, Failure, Modeling, Multiscale modeling
Proceedings Papers

Study of Interlaminar Fracture Properties of Ceramic Matrix Composites at Room and Elevated Temperatures

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Rabih Mansour, Yogesh P. Singh, Manigandan Kannan, Gregory N. Morscher, Frank Abdi, Jalees Ahmad, Cody Godines, Saber DorMohammadi, Sung Choi
Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A009, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65168
https://doi.org/10.1115/GT2017-65168
View Paper titled, Study of Interlaminar Fracture Properties of Ceramic Matrix Composites at Room and Elevated Temperatures
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Topics: Ceramic matrix composites, Fracture toughness, Temperature, Fracture (Materials), Testing, Composite materials, Cross section (Physics), Electrical resistance, Engines, Failure
Proceedings Papers

Optimizing Ceramic Matrix Composite Interlaminar Fracture Toughness (Mode I) Wedge Test

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Frank Abdi, Saber DorMohammadi, Jalees Ahmad, Cody Godines, Gregory N. Morscher, Sung Choi, Rabih Mansour, Steve Gonczy
Proc. ASME. GT2016, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T02A006, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-58076
https://doi.org/10.1115/GT2016-58076
View Paper titled, Optimizing Ceramic Matrix Composite Interlaminar Fracture Toughness (Mode I) Wedge Test
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Topics: Ceramic matrix composites, Fracture toughness, Wedges, Fracture (Materials), Fracture (Process), Fibers, Damage, Failure mechanisms, Finite element model, Stress
Proceedings Papers

Ceramic Matrix Composite Interlaminar Fracture Toughness (Mode I-II) Characterization

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Frank Abdi, Harsh Baid, Jalees Ahmad, Steve Gonczy, Gregory N. Morscher, Sung Choi, Cody Godines
Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T02A004, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-44047
https://doi.org/10.1115/GT2015-44047
View Paper titled, Ceramic Matrix Composite Interlaminar Fracture Toughness (Mode I-II) Characterization
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Topics: Ceramic matrix composites, Fracture toughness, Fracture (Materials), Fracture (Process), ASTM International, Failure mechanisms, Temperature, Tension, Algorithms, Bending (Stress)
Proceedings Papers

A Metal Matrix Composite Damage and Life Prediction Model

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Jalees Ahmad, Unnikrishnan Santhosh, Sandra Hoff
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A059, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-445
https://doi.org/10.1115/97-GT-445
View Paper titled, A Metal Matrix Composite Damage and Life Prediction Model
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Topics: Damage, Metal matrix composites, Fibers, Composite materials, Fracture (Materials), Fracture (Process), Constitutive equations, Deformation, Failure, Finite element analysis
Proceedings Papers

An Approach for Mechanistic Modeling of Ceramic Matrix Composites

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Unni Santhosh, Jalees Ahmad, Robert Miller, Greg Ojard, Yasser Gowayed, Reji John
Proc. ASME. GT2006, Volume 2: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Environmental and Regulatory Affairs, 269-278, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90795
https://doi.org/10.1115/GT2006-90795
View Paper titled, An Approach for Mechanistic Modeling of Ceramic Matrix Composites
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Topics: Ceramic matrix composites, Damage, Finite element analysis, Modeling, Structural analysis
Journal Articles

A Micromechanics Analysis of Cracks in Unidirectional Fiber Composites

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Jalees Ahmad
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. December 1991, 58(4): 964–972.
https://doi.org/10.1115/1.2897715
Published Online: December 1, 1991
View Articletitled, A Micromechanics Analysis of Cracks in Unidirectional Fiber Composites
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Topics: Composite materials, Fibers, Fracture (Materials), Micromechanics (Engineering), Cracking (Materials), Fracture (Process), Stress