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Mechanical Engineering Laboratory
New Jersey Institute of Technology
Report Submitted by
Michael F. DiGianno
Experiment No.
5
Date Performed
10/10/23
Date Submitted
10/17/23
Course & Section
ME215-101
Instructor
Naruemon Suwattananont
Surface Texture
Experiment Title
Performed by Group
101b
With TA
Md Sojib Kaisar
Group Members
Michael D Bauly S
Yahia Elmanier
Marta D
Stephen M
Jonathan G Braeden G
Table of Contents
Abstract
3
Introduction
3
Objectives
3
Background and importance
3
Procedure
4
Original Data Sheet
5
Results and Calculations
6
Discussion
12
Conclusion
12
Questions and Answers
13
Appendix A
14
2
Abstract
This is the lab report for experiment five, known as the surface texture lab. This lab is designed to introduce students to surface topography which is a term that refers to the profile and
overall roughness of a surface. Students will also become familiar with some machines used to measure surfaces such as a surfometer and perthometer. They will measure samples provided and
record the roughness of the surfaces. This helps build an understanding of both surface topography and which are more accurate and reliable for measurement. Introduction
Surface measurement is an important area to understand when we discuss various machining and measurement techniques. It will allow us to analyze how different machines, machining methods, and tool selections impact the final product. This lab will allow students to interpret which methods help them accomplish this best.
Objectives
Students participating in this lab should be able to develop an understanding of surface finishes. They will be introduced to several machines that will help them understand and measure the roughness of the surface. These machines will help students understand what types of operations such as milling and lathe turning create what finishes.
Background
Surface topography is a very wide field. Its importance spreads beyond our area of discussion. “Surfaces represent an important tool for the description and analysis of a multitude of phenomena related to the social, economic, natural and technical sciences.” (Wolf 2020).
Procedure
In this lab students were asked to take the surface roughness measurements of various samples with different machines and techniques. The samples consisted of samples produced in the previous labs, as well as non metallic samples provided. The machines were demonstrated to the group. The machines consisted of a perthometer, surfometer, and a microfinish comparator. The students then replicated the measurements made by the ta. One of the samples was to
be placed in the vibratory finisher, and ran for forty-five minutes. In the meantime, students drew
pictures of the samples, and converted units. Once finished, they took measurements of the refinished sample.
3
Original Data Sheet
4
5
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