التفاصيل البيبلوغرافية
العنوان: |
Statistical Modeling of Wire and Arc Additive Manufactured Stainless Steel 304: Microstructure and Fatigue. |
المؤلفون: |
Gordon, Jerard V., Gary Harlow, D. |
المصدر: |
International Journal of Reliability, Quality & Safety Engineering; Aug2019, Vol. 26 Issue 4, pN.PAG-N.PAG, 13p |
مصطلحات موضوعية: |
THREE-dimensional printing, STAINLESS steel, STATISTICAL models, STEEL manufacture, WEIBULL distribution |
مستخلص: |
Single-bead walls were fabricated using stainless steel (SS) 304 wire and arc additive manufacturing (WAAM). The primary objective is to statistically characterize critical material properties of the build to make comparisons with wrought material. The quality of the build is demonstrated by the size distribution and spatial location of porosity in the build. Deviations in the thermal history as a function of the location in the build, especially as the vertical height of the build increases, cause differences in material properties which are statistically investigated. The material behavior and statistical variances along the horizontal direction of the build compared to perpendicular differences in location is significant. Optical microscopy and electron back-scatter diffraction are used to estimate statistically key geometric properties of grains. A preliminary investigation for fatigue using the strain life approach has been conducted to evaluate the effect of the build process and the location dependence on life. A generalized Weibull distribution is proposed to model the statistical variability of fatigue life data. [ABSTRACT FROM AUTHOR] |
|
Copyright of International Journal of Reliability, Quality & Safety Engineering is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
قاعدة البيانات: |
Complementary Index |