Process parameters investigation of a laser-generated single clad for minimum size using design of experiments
Yükleniyor...
Dosyalar
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Emerald Group Publishing Limited
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Purpose - This paper aims to investigate the effect of four important process parameters (i.e. laser focal distance, travel speed, feeding gas flow rate and standoff distance) on the size of single clad geometry created by coaxial nozzle-based powder deposition by high power laser. Design/methodology/approach - Design of experiments (DOE) and statistical analysis methods were both used to find optimum parameter combinations to get minimum sized clad, i.e. clad width and clad height. Factorial experiment arrays were used to design parameter combinations for creating experimental runs. Taguchi optimization methodology was used to find out optimum parameter levels to get minimum sized clad geometry. Response surface method was used to investigate the nonlinearity among parameters and variance analysis was used to assess the effectiveness level of each problem parameters. Findings - The overall results show that wisely selected four problem parameters have the most prominent effects on the final clad geometry. Generally, minimum clad size was achieved at higher levels of gas flow rate, travel speed and standoff distance and at minimum spotsize level of the laser focal distance. Originality/value - This study presents considerable contributions in assessing the importance level of problems parameters on the optimum single clad geometry created laser-assisted direct metal part fabrication method. This procedure is somewhat complicated in understanding the effects of the selected problem parameters on the outcome. Therefore, DOE methodologies are utilized so that this operation can be better modeled/understood and automated for real life applications. The study also gives future direction for research based on the presented results.
Açıklama
ERMURAT, MEHMET/0000-0002-5661-2108
WOS: 000326857400008
WOS: 000326857400008
Anahtar Kelimeler
Laser-assisted metal deposition, Laser cladding, Laser metal melting, Rapid manufacturing
Kaynak
Rapid Prototyping Journal
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
19
Sayı
6
