TB 26-02 Effects of Large Grain Size in Composite Overwrapped Pressure Vessel

The NASA Engineering and Safety Center (NESC) performed an assessment to characterize the effects of abnormal grain growth (AGG) within a metallic liner of a composite overwrapped pressure vessel (COPV). This effort focused on evaluating the mechanical response of the liner material, including the strain amplification factor (SAF), using a series of custom-designed coupons that incorporated both metal and composite overwrap. The study demonstrated that this approach was effective and practical to characterize strain localization under various conditions and showed strong correlation with modeling results. Additionally, preliminary investigations of phase coherence imaging (PCI), an ultrasonic technique, offered promise in detecting AGG microstructures, but further development is needed.

Download PDF: Effects of Large Grain Size in Composite Overwrapped Pressure Vessel

About The Author

Ben

I am the owner of Cerebral-overload.com and the Verizon Wireless Reviewer for Techburgh.com. My love of gadgets came from his lack of a Nintendo Game Boy when he was a child . I vowed from that day on to get his hands on as many tech products as possible. My approach to a review is to make it informative for the technofile while still making it understandable to everyone. Ben is a new voice in the tech industry and is looking to make a mark wherever he goes. When not reviewing products, I is also a 911 Telecommunicator just outside of Pittsburgh PA.

Twitter: @gizmoboaks

See author's posts