# Non-contact, bi-directional tool tip vibration measurement in CNC milling machines with a single optical sensor

> Research article (Mechanical Systems and Signal Processing, 2020) · cited 33× · AI/ML

**Wikidata**: [openalex:W3001308473](https://www.wikidata.org/wiki/openalex:W3001308473)  
**Source**: https://4ort.xyz/entity/non-contact-bi-directional-tool-tip-vibration-measurement-in-cnc-milling-machines-with-a-single-optical-sensor