Systems and methods for rapid force-based measurements of residual stress
| DWPI Title: Method for determining residual stress in region of structural component, involves employing force sensor in section of component, and measuring load on component through force sensor while applying relaxation technique to region |
| Abstract: Systems and methods that directly measures forces caused by residual stresses in components. The components may be manufactured components including via Additive Manufacturing (AM). The system and method may use a small force sensor fitted onto a part of the component and a force sensor may be placed/fitted near a region of expected residual stress of the component. The tension device may be tensioned to apply a small preload onto the component while a relaxation technique is applied to regions of the component while measuring the load on the force sensor. Regions may be individually and sequentially relaxed by slitting the regions via wire electrical discharge machining (EDM) while measuring the load on the force sensor to directly measure force caused by residual stress within the component. |
| Use: Method for determining residual stress in a region of a component i.e. structural component. |
| Advantage: The residual stress in the structural component can be measured directly and efficiently. |
| Novelty: The method (60) involves applying a preload on the component. A relaxation technique is applied to the region. A load is measured on the component while applying the relaxation technique to the region. The measuring of the load on the component while applying the relaxation technique to the region consists of employing a force sensor in a section of the component where the load on the region of the component is measured. The force sensor measures the load on the component while applying the relaxation technique to the region. A tension device is employed to apply a preload on the component. The component is manufactured via additive manufacturing to include the section that is sized to receive the force sensor and the tension device, enable the force sensor to measure the load on the region of the component, and enable the tension device to place the load on the component. The component is a structural component. |
| Filed: 4/23/2024 |
| Application Number: US18643033A |
| Tech ID: SD 16435.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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