2,615 research outputs found
G-38, 39 and 40: An artist's exploration of space
Three experiments are described which use space processing technology in the formation of and coating of bubbles and spheres to be orbited as sculptures visible from Earth. In one experiment, a 22,000 m1 sphere is to ride into orbit containing a 15 psi Earth atmosphere. Once in orbit, a controller directs a valve to open, linking the sphere to a vacuum of space. Technologies used in the fabrication of these art forms include vacuum film deposition and large bubble formation in the space environment
A Comparative study of the meadow locale at Alder Creek and the Murphy Cabin at Donner Lake: Using the historical and the archaeological record to create a new Donner memory
Impact mitigating capabilities of a spray-on elastomer coating applied to concrete
Structural protection against the effects of a nearby explosive detonation is an area of growing importance. Spray-on elastomer coatings are of interest as a practical and low cost protective solution. Recent research has demonstrated the effectiveness of such coatings for blast mitigation. However, there are two loading scenarios of concern for these applications: blast pressures and fragment impacts. To date, there remains a need to understand the merits of this protective solution for impact indentation of concrete structural elements. In this work, we examine whether, and by what mechanism, an elastomer coating can offer protection in this case. A series of quasi-static indentation and dynamic impact experiments are performed using a 0.1 kg circular cylindrical (i.e. blunt) projectile. It is demonstrated that the coating displays a significant protective capability over the full range of impact velocities considered, c. 45 - 150 m/s. The coating remains intact until impacted at a velocity of c. 120 m/s when it fails by a ductile, tearing mechanism, forming a plug which undergoes large elastic contraction after projectile penetration. A finite element model of the impact indentation of uncoated and coated concrete cubes is developed and validated against the experiments. Focusing on the early time steps and damage initiation in the concrete, the numerical model is used to interrogate the mechanism by which the elastomer achieves its mitigating effect. It is found that the way in which the elastomer alters the stress distribution in the concrete, and its time evolution, is key to its performance. These findings provide a basis for optimising protective coatings for concrete structural elements.George and Lillian Schiff Foundation, University of Cambridg
Module 1: Introduction to Technology Foresight, Risk Management, and InsurTech
Instructional Module 1 for course, Developing Technology Foresight: Case Study of AI in InsurTech
Introduction to the Course
This PDF document describes the course, Developing Technology Foresight: Case Study of AI in InsurTech, and includes learning outcomes and a course outline
Module 3: Technology Foresight and InsurTech
Instructional Module 3 for course, Developing Technology Foresight: Case Study of AI in InsurTech
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