International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,April 2017,

Topic : Estimation and Comparison of Surface Roughness and AE Parameters of P-20 tool steel Material in Wire Electric Discharge Machining using Multiple Regression Analysis and Group Method Data Handling Technique

Authors:Prathik Jain S || H V Ravindra, G V Naveen Prakash, G Ugrasen

Abstract:Wire Electrical Discharge Machining (WEDM) is a specialized thermal machining process capable of accurately machining parts with varying hardness or complex shapes, which have sharp edges that are very difficult to be machined by the main stream machining processes. Selection of process parameters for obtaining higher cutting efficiency or accuracy in WEDM is still not fully solved, even with most up-to-date CNC wire EDM machine. It is widely recognised that Acoustic Emission (AE) is gaining ground as a monitoring method for health diagnosis on rotating machinery. The advantage of AE monitoring over vibration monitoring is that the AE monitoring can detect the growth of subsurface cracks whereas the vibration monitoring can detect defects only when they appear on the surface. This study outlines the machining of P-20 tool steel material using L’16 design of experiment. P-20 tool steel material is used for various large-size plastic mould, precision plastic mould, car accessories, home appliances and electronic equipment plastic molds. Each experiment has been performed varying different process parameters like pulse-on, pulse-off, current and bed speed. Among different process parameters, voltage and flush rate were kept constant. Molybdenum wire having diameter of 0.18 mm was used as an electrode. Simple functional relationships between the parameters were plotted to arrive at possible information on surface roughness and AE signals. But these simpler methods of analysis did not provide any information about the status of the work material. Thus, there is a requirement for more sophisticated methods that are capable of integrating information from the multiple sensors. Hence, methods like Multiple Regression Analysis (MRA) and Group Method of Data Handling (GMDH) have been applied for the estimation of surface roughness, AE signal strength, AE absolute energy and AE RMS. The GMDH algorithm is designed to learn the process by training the algorithm with the experimental data. The experimental observations are divided into two sets: the training set and testing set. The training set is used to make the GMDH learn the process and the testing set will check the performance of GMDH. Different models can be obtained by varying the percentage of data in the training set and the best model can be selected from these, viz., 50%, 62.5%, and 75%. The best model is selected from the said percentages of data. The number of variables selected at each layer is usually taken as a fixed number or a constantly increasing number. It is usually given as fractional increase in the number of independent variables present in the previous level. Three different criterion functions, viz., Root Mean Square (Regularity) criterion, Unbiased criterion, and Combined criterion were considered for the estimation. The choice of criterion for node selection is another important parameter for proper modeling. From the results, it was observed that AE parameters and estimated surface roughness values correlated well with GMDH when compare to MRA..

Keywords: WEDM, AE, MRA, GMDH

Download Paper

DOI: 01.1617/vol4/iss4/pid87023

Related Articles

RFID Technology in Construction Project Management – A Review

Authors: Rounak Bhushan Singh || Sumeet Sagar,Animesh Sinha,Muneesh Methwani

Doi : 01.1617/vol4/iss03/pid49278

Volume2 ,March 2017.

RFID Technology in Construction Project Management – A Review

Authors: S.Pachaiappan || Dr.S.Palanivel

Doi : 01.1617/vol4/iss03/pid49278

Volume2 ,March 2017.

Experimental Study of Steel Fibers Reinforced Concrete over Conventional Concrete

Authors: Varsha Harne || Suyog U. Dhote

Doi : 01.1617/vol4/iss03/pid83154

Volume2 ,March 2017.

Experimental Investigations of Rubber Seed Oil Methyl Ester-Diesel and Butanol-Diesel Blend by Using Diesel Engine

Authors: Vishal V. Patil || Utkarsh Shidhganesh,Somesh Shinde,Mahesh Gurav,Swapnil Ulagadde

Doi : 01.1617/vol4/iss2/pid72430

Volume2 ,February 2017.

Study of Land Acquisition Issues causing delay of NHAI Projects

Authors: Rounak Bhushan Singh || SumeetSagar, Animesh Sinha

Doi : 01.1617/vol4/iss4/pid73465

Volume2 ,April 2017.

Study on Strength and Durability Properties of Bacteria Concrete

Authors: Phani Kumar. V || V. Sainath,Ashok Varma

Doi : 01.1617/vol4/iss3/pid03875

Volume2 ,March 2017.

Influence of Masonary Infill on The Behaviour of RC Frames

Authors: R.Vigneshwaran || Dr.K.Pandurangan

Doi : 01.1617/vol4/iss3/pid01729

Volume2 ,March 2017.

Design of Smart Rolling Shutters for Low Cost Operations

Authors: Kushali Sindhia || Madhumitha Prakash,Dr. S. V. Satish

Doi : 01.1617/vol4/iss3/pid49615

Volume2 ,March 2017.

An Experimental Investigation on Behavior of High Volume Alkali Activated Flyash Concrete

Authors: K.Sasidhar || S. Aruna Jyothy,Dr. B. Damodhara Reddy

Doi : 01.1617/vol4/iss3/pid64813

Volume2 ,March 2017.


Editor Image

Meinhard Taher Schobeiri
Texas A & M University, USA.

View more


ISSN(Online): 2456-1290

Google Scholar Profile

Thomson Reuters ID : q-6288-2016.
ORCiD Research ID : 0000-0001-9540-6799

All Issues


Journal Code : IJERMCE
Electronic ISSN : 2456-1290
Impact Factor : 3.8
Frequency : monthly
Contact :

IFERP Other Journals