EXPERIMENTAL STUDY ON SHRINKAGE OF NARROW PARTS PRODUCED BY LASER CUTTING PROCESS

Cutting these materials by using conventional processes are difficult with plenty of disadvantages. [...]advanced processes like plasma beam cutting, abrasive water jet cutting and laser beam cutting are mostly used to machine such materials5. According to the Taguchi method, the response table for...

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Bibliographic Details
Published in:Research and science today 2019-01, p.92-100
Main Authors: Mustafić, Adnan, Trakić, Elvedin, Osmanović, Almir, Valentinčič, Joško
Format: Article
Language:English
Subjects:
Abrasive cutting
Alloys
Cutting parameters
Design of experiments
Hydraulic jet cutting
Hydraulic jets
Hypotheses
Laser beam cutting
Lasers
Machine tools
Optics
Residual stress
Shrinkage
Steel
Studies
Tables
Taguchi methods
Thickness
Variance analysis
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Summary:Cutting these materials by using conventional processes are difficult with plenty of disadvantages. [...]advanced processes like plasma beam cutting, abrasive water jet cutting and laser beam cutting are mostly used to machine such materials5. According to the Taguchi method, the response table for the means Y and S/N ratios were used to determine the factor effect on the difference between the nominal and measured sample length (Table 4). The results of ANOVA are given in Table 6 and are showing that the sheet thickness t, that was varied in the range from 2 mm to 5 mm, has no statistical significance on the shrinkage, since the p-value exceeds the significance level of 5% (p>0,05). [...]the model to predict the shrinkage encompass only sample nominal width and length (Eq. 3). Since the cutting parameters are constant for all experiments, the thickness of resolidified layer must be the same in all experiments. [...]the surface area ratio of resolidified layer and the base material measured in the cross section perpendicular to the sample length depends only on the sample width.
ISSN:2247-4455
2285-9632