Life-Limiting Behavior of an Oxide/Oxide Ceramic Matrix Composite at Elevated Temperature Subject to Foreign Object DamageSource: Journal of Engineering for Gas Turbines and Power:;2019:;volume( 141 ):;issue: 003::page 31012Author:Presby, Michael J.
,
Kedir, Nesredin
,
Sanchez, Luis J.
,
Calvin Faucett, D.
,
Choi, Sung R.
,
Morscher, Gregory N.
DOI: 10.1115/1.4041145Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The life-limiting behavior of an N720/alumina oxide/oxide ceramic matrix composite (CMC) was assessed in tension in air at 1200 °C for unimpacted and impacted specimens. CMC targets were subjected to ballistic impact at ambient temperature with an impact velocity of 250 m/s under a full support configuration. Subsequent postimpact ultimate tensile strength was determined as a function of test rate in order to determine the susceptibility to delayed failure or slow crack growth (SCG). Unimpacted and impacted specimens exhibited a significant dependency of ultimate tensile strength on test rate such that the ultimate tensile strength decreased with decreasing test rate. Damage was characterized using X-ray computed tomography (CT) and scanning electron microscopy (SEM). A phenomenological life prediction model was developed in order to predict life from one loading condition (constant stress-rate loading) to another (constant stress loading). The model was verified in part via a theoretical preloading analysis.
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| contributor author | Presby, Michael J. | |
| contributor author | Kedir, Nesredin | |
| contributor author | Sanchez, Luis J. | |
| contributor author | Calvin Faucett, D. | |
| contributor author | Choi, Sung R. | |
| contributor author | Morscher, Gregory N. | |
| date accessioned | 2019-03-17T10:16:15Z | |
| date available | 2019-03-17T10:16:15Z | |
| date copyright | 10/4/2018 12:00:00 AM | |
| date issued | 2019 | |
| identifier issn | 0742-4795 | |
| identifier other | gtp_141_03_031012.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4256038 | |
| description abstract | The life-limiting behavior of an N720/alumina oxide/oxide ceramic matrix composite (CMC) was assessed in tension in air at 1200 °C for unimpacted and impacted specimens. CMC targets were subjected to ballistic impact at ambient temperature with an impact velocity of 250 m/s under a full support configuration. Subsequent postimpact ultimate tensile strength was determined as a function of test rate in order to determine the susceptibility to delayed failure or slow crack growth (SCG). Unimpacted and impacted specimens exhibited a significant dependency of ultimate tensile strength on test rate such that the ultimate tensile strength decreased with decreasing test rate. Damage was characterized using X-ray computed tomography (CT) and scanning electron microscopy (SEM). A phenomenological life prediction model was developed in order to predict life from one loading condition (constant stress-rate loading) to another (constant stress loading). The model was verified in part via a theoretical preloading analysis. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Life-Limiting Behavior of an Oxide/Oxide Ceramic Matrix Composite at Elevated Temperature Subject to Foreign Object Damage | |
| type | Journal Paper | |
| journal volume | 141 | |
| journal issue | 3 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.4041145 | |
| journal fristpage | 31012 | |
| journal lastpage | 031012-7 | |
| tree | Journal of Engineering for Gas Turbines and Power:;2019:;volume( 141 ):;issue: 003 | |
| contenttype | Fulltext |