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

这个小企业创新研究（SBIR）第一阶段项目将开发一种改进的空化强化工艺，使用高压水射流在材料中引入深层压缩残余应力，以提高高周疲劳（HCF）的抗疲劳能力。研究表明，引入深度压应力可以显著改善HCF的性能。该公司已经成功展示了利用空化喷丸产生深压应力而不造成损害的能力。该技术的广泛影响将是取代更昂贵的激光冲击强化（LSP）工艺，并且需要廉价的工具（更低的资本成本），没有表面损伤，提高灵活性和进入受限区域（如管内孔）的能力。

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.