John G. Ormerod
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Sourcing, Refining and Recycling of Rare-Earth Magnets Open
Permanent magnets today are used in a wide range of transportation, industrial, residential/commercial, consumer electronics, defense, domestic, data storage, wind energy, and medical markets and applications. There are five classes of com…
View article: Skew-Normal Posterior Approximations
Skew-Normal Posterior Approximations Open
Many approximate Bayesian inference methods assume a particular parametric form for approximating the posterior distribution. A multivariate Gaussian distribution provides a convenient density for such approaches; examples include the Lapl…
Moment Propagation Open
We introduce and develop moment propagation for approximate Bayesian inference. This method can be viewed as a variance correction for mean field variational Bayes which tends to underestimate posterior variances. Focusing on the case wher…
Manufacturing Processes for Permanent Magnets: Part II—Bonding and Emerging Methods Open
Permanent magnets produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. They are widely used in electric machines, electronics, and medical devices. Part I reviews the conventional manufacturing…
Fabrication of highly dense isotropic Nd-Fe-B bonded magnets via extrusion-based additive manufacturing Open
Isotropic bonded magnets with a high loading fraction of 70 vol.% Nd-Fe-B are fabricated via an extrusion-based additive manufacturing, or 3D printing system that enables rapid production of large parts for the first time. The density of t…