Next Article in Journal
Thermal Properties of SiOC Glasses and Glass Ceramics at Elevated Temperatures
Previous Article in Journal
Experimental Investigations on Subsequent Yield Surface of Pure Copper by Single-Sample and Multi-Sample Methods under Various Pre-Deformation
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Materials 2018, 11(2), 278;

Experimental Investigation of Multi-mode Fiber Laser Cutting of Cement Mortar

Department of Mechanical and Automotive Engineering, Kongju National University, Cheonan-si 31080, Chungcheongnam-do, Korea
Korea Railroad Research Institute, Uiwang-si 16105, Gyeonggi-do, Korea
Author to whom correspondence should be addressed.
Received: 26 January 2018 / Revised: 7 February 2018 / Accepted: 8 February 2018 / Published: 10 February 2018
Full-Text   |   PDF [2873 KB, uploaded 10 February 2018]   |  


This study successfully applied multi-mode laser cutting with the variation of the laser cutting speed to cement mortar for the first time. The effects of the amount of silica sand in the cement mortar on laser cutting are tested and analyzed. The kerf width and penetration depth of the specimens after laser cutting are investigated. As the laser cutting speed increases, the penetration depth decreases for both cement paste and cement mortar, whereas the kerf width becomes saturated and increases, respectively, for cement paste and cement mortar. Cross sections of the specimens are compared with illustrations. Top-view images of the cement mortar with indicators of the physical characteristics, such as re-solidification, burning, and cracks are examined, and the possible causes of these characteristics are explained. The optical absorption rates of cement-based materials are quantified at wide ranges of wavelength to compare the absorption rates in accordance with the materials compositions. The chemical composition variation before and after laser cutting is also compared by EDX (Energy Dispersive X-Ray) analysis. In addition to these observations, material removal mechanisms for cement mortar are proposed. View Full-Text
Keywords: cement mortar; heat treatment; multi-mode fiber laser; chemical analysis cement mortar; heat treatment; multi-mode fiber laser; chemical analysis

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Lee, D.; Pyo, S. Experimental Investigation of Multi-mode Fiber Laser Cutting of Cement Mortar. Materials 2018, 11, 278.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top