Engineering and Technology Journal

Studying the Effect of un Coated and Multilayer Coated Tools on Cutting Temperature in Turning Operation

Farhan K. Challab; Maan A. Tawfiq; Salah K. Jawad

Volume 40, Issue 6 , June 2022, , Page 911-917

https://doi.org/10.30684/etj.v40i6.2265

Abstract

The present work studies three variables (cutting velocity, feed rate, and cut depth) on hard turning cutting temperature of uncoated and multilayer-coated carbide (TiN, TiN/TiCN, TiN ... Read More ...

Experimental and Numerical Investigation into Residual Stress During Turning Operation for Stainless Steel AISI 316

Safa M. Lafta; Maan A. Tawfiq

Volume 38, 12A , December 2020, , Page 1862-1870

https://doi.org/10.30684/etj.v38i12A.1607

Abstract

RS (residual stresses) represent the main role in the performance of structures and machined parts. The main objective of this paper is to investigate the effect of feed rate with constant ... Read More ...

Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

Mohammed H. Shaker; Salah K. Jawad; Maan A. Tawfiq

Volume 38, 11A , November 2020, , Page 1593-1601

https://doi.org/10.30684/etj.v38i11A.1516

Abstract

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The ... Read More ...

Point Clouds Pre-Processing and Surface Reconstruction Based on Tangent Continuity Algorithm Technique

Ali M. Al-Bdairy; Ahmed A. A. Al-Duroobi; Maan Tawfiq

Volume 38, 6A , June 2020, , Page 917-925

https://doi.org/10.30684/etj.v38i6A.1612

Abstract

Pre-processing is essential for processing the row data point clouds which acquired using a 3D laser scanner as a modern technique to digitize and reconstruct the surface of the 3D ... Read More ...

Influence of Cutting Speed on Residual Stresses by Machining of AISI 316L

Safa M. Lafta; Maan A. Tawfiq

Volume 38, 3A , March 2020, , Page 394-401

https://doi.org/10.30684/etj.v38i3A.459

Abstract

RS have an important role in the performance of components and machined structures. The objective of this paper is to study the influence of cutting speed on RS in workpieces that are ... Read More ...

Point Cloud Pre-Processing and Surface Reconstruction Based on Chord Algorithm Technique

Ali M. Al-Badairy; Ahmed A. Al-Duroobi; Maan A. Tawfiq

Volume 37, 9A , September 2019, , Page 364-368

https://doi.org/10.30684/etj.37.9A.3

Abstract

3D laser scanner is one of the modern technologies, which used to obtain the geometric information about the 3D scanned object surface. But, there are some problems that are associated ... Read More ... 3D laser scanner is one of the modern technologies, which used to obtain the geometric information about the 3D scanned object surface. But, there are some problems that are associated with this technique such as the huge number of obtained points which require high memory to save and the required data processing processes. This paper proposed a data simplification algorithm for point cloud of a scanned object using 3D laser scanner (Matterand Form) in a manner to extract the necessary geometric features, which arerepresented by points for a 3D object. This algorithm based on theinstantaneous calculation of chord height of each set of adjacent points in thepoint cloud. A MATLAB environment was used to build a proposedsimplification algorithm program. Then this program was applied using aproposed case study. The result which was obtained from the application of theproposed algorithm and surface fitting process for the proposed case studyproved the effectiveness of the proposed algorithm in data simplification. Thepercent of data which was ignored as noisy data point was (24%) of the totalnumber of data point in applying the algorithm for two attempts.3D laser scanner is one of the moderntechnologies, whichused toobtain the geometric information about the 3D scanned object surface.But,there are someproblemsthatareassociated with this technique such as thehuge number of obtained pointswhichrequire high memory to saveandtherequired data processing processes.This paper proposed a data simplificationalgorithm for point cloud of ascanned object using 3D laser scanner (Matterand Form) in amanner to extract the necessary geometric features, whicharerepresented by points for a 3D object. This algorithm based ontheinstantaneous calculation of chord height of each set of adjacent points in thepoint cloud. A MATLAB environment wasused to build a proposedsimplification algorithm program. Thenthis programwasapplied using aproposed case study.The result which was obtained fromtheapplicationoftheproposed algorithm and surface fitting process for the proposed case studyproved the effectiveness of the proposed algorithm in data simplification.Thepercent of data which was ignored as noisy data point was (24%)of thetotalnumber of data point in applying the algorithm for two attempts.

Author = Tawfiq, Maan

Studying the Effect of un Coated and Multilayer Coated Tools on Cutting Temperature in Turning Operation

Abstract

Experimental and Numerical Investigation into Residual Stress During Turning Operation for Stainless Steel AISI 316

Abstract

Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

Abstract

Point Clouds Pre-Processing and Surface Reconstruction Based on Tangent Continuity Algorithm Technique

Abstract

Influence of Cutting Speed on Residual Stresses by Machining of AISI 316L

Abstract

Point Cloud Pre-Processing and Surface Reconstruction Based on Chord Algorithm Technique

Abstract