Tensile Creep and Fatigue of Sylramic-iBN Melt-Infiltrated SiC Matrix Composites: Retained Properties, Damage Development, and Failure Mechanisms (Preprint)
Abstract
The elevated temperature creep, fatigue, rupture, and retained properties of ceramic matrix composites envisioned for use in gas turbine engine applications are essential properties to understand and model for the purposes of component design and life-prediction. In order to quantify the effect of stress, time, temperature, and oxidation for a state-of-the-art composite system: the Sylramic-iBN woven fiberreinforced, BN interphase, melt-infiltrated SiC matrix composite, a wide variety of tensile creep, dwell fatigue, and cyclic fatigue experiments were performed in air at 1204 degrees Celsius. Tests were either taken to failure or interrupted. Interrupted tests were then tested at room temperature to determine the residual mechanical properties. The retained properties of most of the composites subjected to tensile creep or fatigue was usually within 20% of the as-produced strength and 10% of the as-produced elastic modulus.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2007
- Accession Number
- ADA501502
Entities
People
- Greg Ojard
- Gregory N. Morscher
- Jalees Ahmed
- Reji John
- Robert Miller
- U. Santhosh
- Yasser Gowayed
Organizations
- Pratt & Whitney