KEYWORDS: Temperature metrology, Environmental sensing, Digital image correlation, Space operations, Cameras, Environmental monitoring, Control systems, Speckle, Light sources and illumination, Metals
In view of the limitations of the existing monitoring methods for dimensional stability of the vacuum-encapsulated insulation panel under high and low temperature environment, based on digital image correlation (DIC) measurement technology and high and low temperature environment test technology, this paper proposes a multi-face dimensional stability measurement method under temperature change environment through the research of multi-face synchronous noncontact measurement design and low temperature measurement method for anti-condensation frost. This method aims to achieve accurate monitoring of dimensional stability of the vacuum-encapsulated insulation panel under high and low temperature environment. The non-contact deformation measurement system for multi-faces at high temperature and low temperature was designed, and a high-precision thermal deformation test platform was built. The measurement accuracy verification test was carried out, and the test results showed that the measurement accuracy of the system was better than 2×10-6/°C in the temperature change environment. The measurement of dimensional stability of the vacuum-encapsulated insulation panel is successfully realized by using the test platform.
The oblique impact damage model of hybrid fiber metal laminates is established, and the process of the bullet impacting aluminum alloy-carbon/glass hybrid fiber laminates with multi-angle and high speed is numerically simulated to explore the influence of impact angle on energy absorption, contact force and interlayer failure area of metal fiber laminates. The results show that the kinetic energy consumption decrease with the increase of the impact angle. The impact angle directly affects the energy absorption characteristics of the hybrid fiber metal laminate. As a whole, the failure area of metal layer and fiber layer decreases with the impact angle. The failure area of the carbon fiber layer is smaller than that of the glass fiber layer, and the failure area of the glass fiber layer from the top to the bottom gradually increases, but the failure area of the carbon fiber layer from the top to the bottom has no obvious change. Because of the impact angle, the kinetic energy dissipation, the maximum fiber stress position and failure area of hybrid fiber metal laminates have significant effects.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.