SBIR Phase I: Cavitation Peening to Create Deep Residual Stresses for High Strength Components

这个小型企业创新研究(SBIR)第一阶段项目将开发一种改进的空化喷丸工艺，使用高压水射流在材料中引入深度压缩残余应力，以提高高周疲劳(HCF)的抗力。已有研究表明，深度压应力的引入可以显著改善高压腔的性能。该公司已经成功地展示了使用空化喷丸产生深度压应力而不会造成损害的能力。该技术的更广泛影响将是取代更昂贵的激光冲击喷丸(LSP)工艺，并将需要廉价的工具(较低的资本成本)、没有表面损伤、更高的灵活性和接触受限区域的能力，如管子内孔。

This Small Business Innovation Research (SBIR) Phase I project will develop an improved cavitation peening process using high-pressure water jets to introduce deep compressive residual stresses in materials to improve high-cycle fatigue (HCF) resistance. It has been shown that the introduction of deep compressive stresses can provide significant HCF performance improvements. The company has successfully demonstrated the ability to generate deep compressive stresses without causing damage using cavitaion peening. The broader impact of the technology will be to replace the more expensive laser shock peening (LSP) process, and will require inexpensive tooling (lower capital costs), absence of surface damage, improved flexibility and ability to access restricted areas such as inside bores of tubes.