Next Article in Journal
Discrete Element Simulation of Orthogonal Machining of Soda-Lime Glass
Next Article in Special Issue
The Prediction of Surface Error Characteristics in the Peripheral Milling of Thin-Walled Structures
Previous Article in Journal / Special Issue
Modal Analysis, Metrology, and Error Budgeting of a Precision Motion Stage
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessFeature PaperArticle
J. Manuf. Mater. Process. 2018, 2(1), 9; https://doi.org/10.3390/jmmp2010009

Precise In-Process Strain Measurements for the Investigation of Surface Modification Mechanisms

Bremen Institute for Metrology, Automation and Quality Science, University of Bremen, 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Received: 8 December 2017 / Revised: 24 January 2018 / Accepted: 25 January 2018 / Published: 30 January 2018
(This article belongs to the Special Issue Precision Manufacturing)
View Full-Text   |   Download PDF [2148 KB, uploaded 31 January 2018]   |  

Abstract

The question, how certain surface layer properties (for example, hardness or roughness) can be specifically influenced in different manufacturing processes, is of great economic interest. A prerequisite for the investigation of the formation of surface layer properties is the metrological assessment of the material stresses during processing. Up to now, no commercial in-process measuring system exists, which is able to determine material stresses in the form of mechanical strains in high-dynamic manufacturing processes with sufficient accuracy. A detailed analysis of the resolution limits shows that speckle photography enables deformation measurements with a resolution in the single-digit nanometer range. Thus, speckle photography basically offers the potential to measure material stresses during processing. Using the example of single-tooth milling, the applicability of speckle photography for in-process stress measurements is demonstrated. Even in such highly dynamic manufacturing processes with cutting speeds up to 10 m/s, the absolute measurement uncertainty of the strain is less than 0.05%. This is more than one order of magnitude lower than the occurring maximal strain. Therefore, speckle photography is suitable for characterizing the dynamic stresses and the material deformations in manufacturing processes. View Full-Text
Keywords: in-process measurement; strain; cutting in-process measurement; strain; cutting
Figures

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).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Tausendfreund, A.; Stöbener, D.; Fischer, A. Precise In-Process Strain Measurements for the Investigation of Surface Modification Mechanisms. J. Manuf. Mater. Process. 2018, 2, 9.

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.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
J. Manuf. Mater. Process. EISSN 2504-4494 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top