学术报告通知二则 报告题目：APPLICATION OF PROGRESSIVE FAILURE ANALYSIS FOR PREDICTION OF DAMAGE EXTENT AND RESIDUAL STRENGTH OF COMPOSITE MATERIALS
报告人：Mohsen Khatiblou
报告地点：明故宫A18楼529报告厅
报告时间：2015年4月23日 14:00-15:30
主办单位：国际交流合作处、科协、航空宇航学院
报告摘要：
When dealing with composite structures, significant degradation of strength due to damage remains a major concern. Reason for concern is further amplified by the fact that in some cases, even invisible damage can cause intolerable reduction in strength. Because of the non-unique and complex failure modes of composite materials, prediction of damage extent and residual strength demands more rigorous analysis examining each failure mode contributing to the loss of structural integrity. For this report, experiments and simulations were performed to study failure modes and damage extent due to impact and indentation and the residual strength in tension.
报告题目：Classical Shock Test Data Evaluation and Bird Strike Shock Test
报告人：Mohsen Khatiblou
报告地点：明故宫A18楼529报告厅
报告时间：2015年4月24日 8:30-10:00
报告摘要：
Shock imparted on any structure can cause instant failure or accelerated fatigue of both external and internal critical components. Brittle electronic components are particularly susceptible to failure by this kind of event. This requires sensitive components be qualified for such short duration loading events.
Shock testing typically falls into two categories, classical shock testing and pyroshock or ballistic shock testing. Here shock tests and data evaluation based upon Mil-Std-810 recommendations will be presented. Mil-std-810 specifies shock testing requirements for functional and crash hazard conditions. These two are of particular importance for the critical components installed on an aircraft. However, no shock test environment due to bird strike at the critical electronic locations is available or defined. Comparison of the shock response spectrum (SRS) from the bird strike test with those from functional and crash hazard tests will determine if additional qualification tests for critical components are required for bird strike.
报告人简介：
1978 � 81: Lawerence Berkeley Laboratory.
1981 � 82 : Honeywell turbo machinery division.
1982 � 86 : Ford Aerospace, military hardware.
1986 � 08 : McDonnell Douglas / Rockwell / Boeing
2008 � 09 : Orbital Sciences corp. rocket division.
