Effect of Laser Shock Peening Parameters on Residual Stresses and Corrosion Fatigue of AA5083 (open access)

Effect of Laser Shock Peening Parameters on Residual Stresses and Corrosion Fatigue of AA5083

Article examining Aluminium alloy 5083 subjected to Laser Shock Peening both with (LSP) and without protective coating (LPwC) at multiple pulse densities. A second LPwC treatment was conducted fully submersed under water, in addition to the standard laminar water flow condition. Results show that compressive residual stresses were generated in all cases, although their character varied depending on the peening strategy and method of confinement.
Date: October 14, 2021
Creator: Kaufman, Jan; Špirit, Zbyněk; Vasudevan, Vijay K.; Steiner, Matthew Alan; Mannava, Seetha Ramaiah; Brajer, Jan et al.
System: The UNT Digital Library
The hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure (open access)

The hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure

This article studies the hygroscopicity of moso bamboo (Phyllostachys edulis) with a gradient fiber structure assessed by a dynamic vapor sorption (DVS) apparatus and fitted with a Haillwood–Horrobin (H–H) model. The effects of the chemical composition, gradient fiber structure, and mesopore structure of the bamboo were also investigated. The results demonstrate that the hygroscopicity of bamboo gradually increases from the outer to the inner layer along the thickness of the culm wall, which is related to the gradient distribution of the fibers. The structure–function relationships between the chemical composition, multi-scale structure, and hygroscopicity identified in this study provide a theoretical basis for bamboo drying and storage technology, as well as the processing and application of bamboo fiber-based composites.
Date: October 15, 2021
Creator: Wei, Xin; Wang, Ge; Smith, Lee M. & Jiang, Huan
System: The UNT Digital Library
A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System (open access)

A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System

Article studying the noise generated by a quadrotor biplane unmanned aerial system (UAS) for various conditions in terms of the UAS pitch angle, propellers rotating velocity (RPM), and the UAS speed to understand the physics involved in its aeroacoustics and structure-borne noise.
Date: October 18, 2021
Creator: Heydari, Morteza; Sadat Hosseini, Seyed Hamid & Singh, Rajneesh
System: The UNT Digital Library
Predicting psoriasis using routine laboratory tests with random forest (open access)

Predicting psoriasis using routine laboratory tests with random forest

Article describes how psoriasis is a chronic inflammatory skin disease that affects approximately 125 million people worldwide. The goal of the authors' study is to derive a powerful predictive model for psoriasis disease based on only routine hospital tests.
Date: October 19, 2021
Creator: Zhou, Jing; Li, Yuzhen & Guo, Xuan
System: The UNT Digital Library