{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T15:02:22Z","timestamp":1789570942345,"version":"build-2803163510"},"reference-count":28,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:00:00Z","timestamp":1789516800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005047","name":"Liaoning Provincial Natural Science Foundation","doi-asserted-by":"publisher","award":["2024-MS-134"],"award-info":[{"award-number":["2024-MS-134"]}],"id":[{"id":"10.13039\/501100005047","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Foundation of Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft","award":["20240224"],"award-info":[{"award-number":["20240224"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Micromachines"],"abstract":"<jats:p>Carbon fiber-reinforced polyetheretherketone is widely used in aerospace, transportation, and medical devices because of its high interlaminar and intralaminar fracture toughness, excellent mechanical properties, and long-term stability at elevated temperatures. However, its two-phase structure, consisting of brittle fibers embedded in a tough matrix, presents significant machining challenges. In this study, a two-stage laser\u2013ultrasonic vibration-assisted milling process was investigated by combining laser-induced matrix thermal softening and decomposition with high-frequency, intermittent tool\u2013workpiece contact. Unidirectional laminates with 0\u00b0 and 90\u00b0 fiber orientations were machined to systematically evaluate the effects of processing parameters on cutting force, measured surface temperature, surface roughness, and machining defects. The proposed process reduced the cutting force by 7.4\u201326.1%, improved surface roughness, and reduced observable machined surface defects. Appropriate laser and ultrasonic parameters were associated with lower measured surface temperatures and fewer observable fiber fracture and fiber\u2013matrix separation features, thereby improving machined surface quality. These findings clarify the synergistic effects of laser and ultrasonic parameters and provide a basis for process optimization and high-quality machining of carbon fiber-reinforced polyetheretherketone composites.<\/jats:p>","DOI":"10.3390\/mi17091087","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T13:50:27Z","timestamp":1789566627000},"page":"1087","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Experimental Investigation of Laser-Assisted Ultrasonic Vibration Milling of CF\/PEEK-Based CFRTP Unidirectional Laminates"],"prefix":"10.3390","volume":"17","author":[{"given":"Zhengqiang","family":"Li","sequence":"first","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"visualization","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Kang","family":"Xiao","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"}]},{"given":"Minghai","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"supervision","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"}]},{"given":"Qijia","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"}]},{"given":"Xuezhi","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Xianjun","family":"Kong","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"funding-acquisition","vocabulary":"credit"}]},{"given":"Siyu","family":"Zhou","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft, Shenyang Aerospace University, Ministry of Education, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"data-curation","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"111247","DOI":"10.1016\/j.compositesb.2024.111247","article-title":"Process characteristics, damage mechanisms and challenges in machining of fibre reinforced thermoplastic polymer (FRTP) composites: A review","volume":"273","author":"Ge","year":"2024","journal-title":"Compos. 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