A5021480104- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Welding Techniques and Residual Stresses
- Intermetallics and Advanced Alloy Properties
- High Entropy Alloys Studies
- MXene and MAX Phase Materials
- Educational Games and Gamification
- Sports Analytics and Performance
- Auction Theory and Applications
- Advancements in Solid Oxide Fuel Cells
- Aluminum Alloys Composites Properties
- Clinical Reasoning and Diagnostic Skills
- Physical Activity and Health
- Polymer composites and self-healing
- Cardiac Health and Mental Health
- Mobile Health and mHealth Applications
- Cardiovascular Syncope and Autonomic Disorders
- Blood Pressure and Hypertension Studies
- Energetic Materials and Combustion
- Manufacturing Process and Optimization
- Nursing Diagnosis and Documentation
- Advanced ceramic materials synthesis
- Heart Failure Treatment and Management
- Cardiovascular and exercise physiology
- Laser and Thermal Forming Techniques
The Aerospace Corporation
2018-2025
MultiCare Tacoma General Hospital
2013-2022
Heart Foundation
2022
MultiCare Health System
2020
Alaska Heart and Vascular Institute
2020
University of Florida
2014
Abstract Selective laser melting (SLM) was used to prepare notched high‐cycle fatigue test specimens made from nickel‐based superalloy Inconel 718. Samples were designed have 1 of 3 different notch geometries, including V notches with K t 2.2 or 3.1, a U 2.0, and printed in either vertical horizontal orientations. tested as‐printed dimensions surfaces after heat treatment, but separate set SLM samples as plates machined final comporting the V‐notch specimen = 3.1. High‐cycle testing showed...
Self-healing materials represent a paradigm shift from traditional development, enabling intrinsic repair of functionality (such as strength) after catastrophic failure opposed to part replacement. Several healing mechanisms have been demonstrated in polymeric and ceramic materials, but few metallic systems. This study demonstrates novel liquid-assisted self-healing metal-matrix composite (MMC) designed be capable over 90% strength recovery cycle. The aluminum (Al)-based matrix is reinforced...
Inconel 718 powder with reduced carbon content was used to manufacture coupons via laser bed fusion (LPBF) study the influence of on microstructures and mechanical properties HIP'ed heat-treated material. The concentration in this material kept deliberately low (0.01 wt%) relative a typical commercial composition (0.04 IN718 order minimize precipitation primary carbides during post-processing heat treatments, which have been observed be deleterious elevated temperature such as elongation,...
Research on the selective laser melting (SLM) method of powder bed fusion additive manufacturing (AM) has shown that surface and internal quality AM parts is directly related to machine settings such as energy density, scanning strategies, atmosphere. To optimize parameters for improved component quality, density typically controlled via power, rate, strategy, but can also be by changing spot size focal plane shift. Present work being conducted The Aerospace Corporation was initiated after...
Chest pain is a common reason for emergency department (ED) visits. Evidence-based decision aids assessing risk an adverse cardiac event are underused in community hospital care. This study explored the acceptability, barriers, facilitators, and potential strategies implementation of HEART Score stratification tool, accelerated diagnostic pathway, shared decision-making visual aid with physicians chest patients ages >45 ED.Single center, mixed-methods study. (1) Physician semistructured...
Background Patients with heart failure preserved ejection fraction (HFpEF) experience poor exercise tolerance and quality of life. Little is known about the feasibility or effects HFpEF training (ET) in a community hospital setting. Objective The aim this study was to examine pilot data community-based ET intervention. Methods This single-group (n = 16), pretest-posttest, 9-week Minnesota Living With Heart Failure Questionnaire, Patient Health Questionnaire-9, cardiopulmonary test (peak VO 2...
Bimetallic additive manufacturing (AM) allows for new design options, as components can leverage the advantageous properties of each metal. Directed energy deposition (DED) is an process well suited bimetallic printing, it effectively transition between materials during printing process. Studies have found that microstructure produced with leads to unique mechanical and material properties, but few studies discuss how transitioning method affect these properties. This work focuses on testing...
This study analyzes the elevated temperature tensile results of SLM IN718 as a function strain rate and test in order to better understand temporal thermal aspects environmental sensitivity. Fully heat-treated samples are directly compared wrought material corresponding industry standards provide valuable perspective on current state capabilities. It is found that tested across all conditions have inferior strength ductility same heat treatment. Strength variation attributed different sizes...
Personal Activity Intelligence (PAI) is a novel heart-rate-based metric used to assess cardiorespiratory fitness and quantify physical activity.The aim of this study was examine the feasibility, acceptability, effectiveness PAI with patients in clinic setting.Patients (n = 25) from 2 clinics underwent 12 weeks heart-rate-monitored activity interfaced aPAI Health phone app. We pre-post design Physical Vital Sign International Questionnaire. Feasibility, measures were evaluate...