April Cooke

April Cooke
Commonwealth Center for Advanced Manufacturing

PhD in Mechanical Engineering

About

8
Publications
1,848
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642
Citations

Publications

Publications (8)
Chapter
This report is the first step in a process to develop standards appropriate for the testing of the mechanical properties of metal parts made via additive manufacturing.
Chapter
This chapter investigates the current state-of-the-art methods for determining the properties of metal powders. This assessment evaluates both existing standards that provide guidance for powder property measurement methods, as well as technical publications describing methods that are not covered as completely by standards.
Article
A test artifact, intended for standardization, is proposed for the purpose of evaluating the performance of additive manufacturing (AM) systems. A thorough analysis of previously proposed AM test artifacts as well as experience with machining test artifacts have inspired the design of the proposed test artifact. This new artifact is designed to pro...
Article
Process models, including finite element modeling simulations, are important for optimizing the metal cutting process, allowing industry to make parts faster, better, and at less cost. Measurements of the process can be used to improve and verify the accuracy of these models. There are many error sources when using infrared radiation thermography t...
Article
The cutting of metals with a sharp tool - machining - has been a field of experimental and analytical study for over a century. Research continues to improve the understanding and effectiveness of the machining of special materials like aircraft titanium alloys. Recent advances in high-speed microvideography are being applied to the study of machin...
Article
The micro-scale temperature fields in the cutting of two AISI 4140 steels with different machinability ratings were measured. A custom infrared microscope was constructed; each pixel was calibrated separately to reduce measurement uncertainty. Orthogonal cutting experiments were performed on a high speed machining center with surface speeds up to 5...
Article
Because it is key to understanding the performance of material removal processes and resultant workpiece quality, the measurement of temperature during material removal is done extensively. We review several widely used temperature measurement methods and show how they can be applied to temperature monitoring during material removal. Since there is...
Article
A custom thermal microscope was constructed using a high-bandwidth thermal imaging system (40 megapixels/sec). The microscope was attached to a high-speed machining centre (20 thousand RPM/18.5 kW spindle) that was operated as a high-speed lathe to measure temperature distributions during orthogonal cutting of AISI 1045 steel at surface speeds of u...

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