{"product_id":"matrix-cracking-in-3d-orthogonal-gregory-n-morscher-9781287288961","title":"Matrix Cracking in 3D Orthogonal Melt-Infiltrated Sic\/Sic Composites with Various Z-Fiber Types","description":"The occurrence of matrix cracks in melt-infiltrated SiC\/SiC composites with a 3D orthogonal architecture was determined at room temperature for specimens tested in tension oriented in the X-direction (parallel to Z-bundle weave direction) and Y-direction (perpendicular to Z-bundle weave direction) and Y-direction (perpendicular to Z-bundle weave direction). The fiber-types were Sylramic and Sylramic-IBN in the X and Y-directions and lower modulus ZMI, T300, and rayon in the Z-direction. Acoustic emission (AE) was used to monitor the matrix cracking activity. For Y-direction composites, the AE data was used to determine the exact (+\/- 0.25 mm) location where matrix cracks occurred in the 3D orthogonal architecture. This enabled the determination of the stress-dependent matrix crack distributions for small but repeatable matrix rich 'unidirectional' and the matrix poor 'cross-ply' regions within the architecture. It was found that matrix cracking initiated at very low stresses (approx. 40 MPa) in the 'unidirectional' regions for the largest z-direction fiber tow composites. Decreasing the size of the z-fiber bundle, increased the stress for matrix cracking in the 'unidirectional' regions. Matrix cracking in the 'cross-ply' regions always occurred at higher stresses than in 'unidirectional' regions, and the stress-dependent matrix crack distribution of the 'cross-ply' regions was always over a wider stress-range than the 'unidirectional' regions. For composites tested in the X-direction, a lower elastic modulus and a narrower and lower stress-range for matrix cracking were observed compared to composites tested in the Y-direction.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Gregory N. Morscher\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1287288960\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781287288961\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 08\/06\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 28\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.15lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.06d","brand":"Gregory N. Morscher","offers":[{"title":"Paperback","offer_id":47611327545599,"sku":"9781287288961","price":15.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_2ca9fc62-da11-44c2-b087-dee09435073d.jpg?v=1764513182","url":"https:\/\/www.whiterainbookhouse.com\/products\/matrix-cracking-in-3d-orthogonal-gregory-n-morscher-9781287288961","provider":"WR Book House","version":"1.0","type":"link"}