• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Exploratory Evaluation of Alumina Ceramic Housings for Deep Submergence Service Fourth Generation Housings.
【24h】

Exploratory Evaluation of Alumina Ceramic Housings for Deep Submergence Service Fourth Generation Housings.

机译：第四代深埋壳体氧化铝陶瓷外壳的探索性评价。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Unmanned vehicles operating at depths in excess of 10,000 feet require for the optimization of their performance parameters (i.e., speed, range, payload, maneuverability) pressure hulls with a low weight-to-displacement ratio, preferably less than 0.5. Such low weight-to-displacement ratios cannot be achieved with metallic pressure hulls because of their low specific strengths. Aluminum oxide ceramics possess specific strength in the 82,000 to 139,000 psi range, which is adequate for achieving a 0.5 weight-to-displacement ratio in pressure hulls fabricated from the material. The intrinsic cost of the material is low (less than $0.2/pound). The material is nonmagnetic, impervious to water, inert in seawater, a good conductor of heat, and possesses a high modulus of elasticity. Its major drawback is brittleness, which results in low point impact resistance. There appears to be also a limitation in the maximum size that can be fabricated by the present manufacturing process. (js)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号