Justin G Whiting,Vipin N Tondare,John Henry J Scott et al.
Justin G Whiting et al.
Metal powder particle size distribution (PSD) is a critical factor affecting powder layer density and uniformity in additive manufacturing processes. Among various existing measurement methods, dynamic image analysis (DIA) instruments are v...
Robert X Gao,Lihui Wang,Moneer Helu et al.
Robert X Gao et al.
Continued advancement of sensors has led to an ever-increasing amount of data of various physical nature to be acquired from production lines. As rich information relevant to the machines and processes are embedded within these "big data", ...
Considering the influence of heating rate, complex hardening and dynamic strain aging in AISI 1045 machining: experiments and simulations [0.03%]
加热速度，复杂硬化及动态应变时效对AISI 1045切削性能的影响分析：实验与模拟研究
Friedrich Bleicher,Christian Baumann,Stephan Krall et al.
Friedrich Bleicher et al.
In the modelling of machining operations, constitutive models must consider the material behavior subject to high plastic strains, high strain rates, high temperatures and high heating rates. A new material model for AISI 1045, which captur...
Harald Bosse,Horst Kunzmann,Jon R Pratt et al.
Harald Bosse et al.
All measurements performed in science and industry are based on the International System of Units, the SI. It has been proposed to revise the SI following an approach which was implemented for the redefinition of the unit of length, the met...
In-situ calibration of laser/galvo scanning system using dimensional reference artefacts [0.03%]
基于尺寸基准标准器具的激光/振镜扫描系统原位标定方法
H Yeung,B M Lane,M A Donmez et al.
H Yeung et al.
Laser powder bed fusion systems use a high-power laser, steered by two galvanometer (galvo) mirrors to scan a pattern on metal powder layers. Part geometric tolerances depend on the positioning accuracy of the laser/galvo system. This paper...
Identification of machine tool squareness errors via inertial measurements [0.03%]
基于惯性测量的机床垂直度误差识别方法
Károly Szipka,Andreas Archenti,Gregory W Vogl et al.
Károly Szipka et al.
The accuracy of multi-axis machine tools is affected to a large extent by the behavior of the system's axes and their error sources. In this paper, a novel methodology using circular inertial measurements quantifies changes in squareness be...
A standards-based approach for linking as-planned to as-fabricated product data [0.03%]
基于标准的计划与实际产品数据链接方法
Moneer Helu,Alex Joseph,Thomas Hedberg Jr
Moneer Helu
The digital thread links disparate systems across the product lifecycle to support data curation and information cultivation and enable data-driven applications, e.g., digital twin. Realizing the digital thread requires the integration of s...
Gregory W Vogl,M Alkan Donmez,Andreas Archenti
Gregory W Vogl
Machine tools degrade during operations, yet knowledge of degradation is elusive; accurately detecting degradation of linear axes is typically a manual and time-consuming process. Manufacturers need automated and efficient methods to diagno...
Gregory W Vogl,M Alkan Donmez
Gregory W Vogl
Simple vibration-based metrics are, in many cases, insufficient to diagnose machine tool spindle condition. These metrics couple defect-based motion with spindle dynamics; diagnostics should be defect-driven. A new method and spindle condit...