Impact technologies have developed a robust modeling paradigm for actuator fault detection and failure prediction. This model-based approach to prognostics health management (PHM) applies physical advanced parametric identification techniques, along with prediction algorithms, in order predict the time-to-failure each of critical, competitive modes within system. Advanced probabilistic fusion strategies are also leveraged combine both collaborative sources evidence, thus producing more...

Abstract Global climate change related to anthropogenic CO 2 emissions is one of the most significant challenges for future human life on Earth. There are many potential options reducing or even eliminating atmospheric including underground sequestration, carbon mineralization and ocean storage. One promising materials Mg(OH) which highly reactive capable forming stable carbonates. Here we show a novel low-carbon method producing , from globally abundant olivine-rich silicate rocks. A...

Prognostics and health management (PHM) is an approach to system life-cycle support that seeks reduce/eliminate inspections time-based maintenance through accurate monitoring, incipient fault detection, prediction of impending faults. Coupled with autonomic logistics for unprecedented responsiveness, cost effectiveness, mission availability, PHM largely automated in its application. Incorporating the principles condition-based (CBM) along tenets reliability-centered (RCM), paradigm extends...

Actuators are complex electro-hydraulic or mechanical mechanisms utilized in aircraft to drive flight control surfaces, landing gear, cargo doors, and weapon systems. Impact has developed a prognostic health management (PHM) methodology for these critical systems that includes signal processing neural network tracking techniques, along with automated reasoning, classification, knowledge fusion, probabilistic failure mode progression algorithms. The utilizes the command/response hydraulic...

Abstract The statistical information on the share of hydrogen sector-wise consumption indicates that 95% total is utilized in ammonia synthesis, petroleum refining processes and methanol production. We discuss how used these several smaller-scale manufacturing industries. also present trend as fuel, an energy carrier fuel cells for generating electricity, powering vehicles, well aerospace applications. Natural gas caters approximately half production resources. Therefore, scope emphasized...

Abstract This paper reviews the research undertaken to study design criteria that address monolithic support structure requirements in steam reforming operation for effective mass transfer of process gases active sites and conductive heat through tube wall catalytic areas, as well low pressure drop operation. Design considerations include selection substrate materials possess good mechanical strength withstand severe reaction conditions prevent catalyst crushing would lead carbon formation...

Additive manufacturing (3D printing) is enabling novel porous structures such as triply periodic minimal surfaces (TPMS) that may help improve the efficiency of various applications in chemical engineering. In this work, a range Schwarz–Diamond TPMS were examined experimentally terms printability and pressure drop. X-ray computed tomography scans used to show shape was accurately printed, however systematic reduction porosity observed compared with each designed structure. The drop through...

Abstract Molten oxide electrolysis (MOE) is a promising electrochemical route to de-carbonize primary and secondary metal production. Developing MOE processes starts with laboratory experiments at temperatures &gt; $$1000\,^\circ{\rm C}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>1000</mml:mn> <mml:msup> <mml:mspace /> <mml:mo>∘</mml:mo> </mml:msup> <mml:mi>C</mml:mi> </mml:mrow> </mml:math> lasting ~10 hours requiring long heating/cooling times protect...

Powder-bed binder-jetting 3D printing requires the use of a liquid binder or ink. These binders/inks have been widely tailored for individual application. This article covers proof-of-concept development an ink powder-bed printer. The formulation in our work is both catalytically active and used to bind catalyst substrate. A modified, commercially available inkjet cartridge spread onto powder surface, forming shapes layer-wise fashion produce green bodies that are heat-treated post-print....

Expanded deployment of Electro-Mechanical Actuators (EMAs) in critical applications has created much interest EMA Prognostic Health Management (PHM), a key enabling technology condition based maintenance (CBM). As such, Impact Technologies, LLC is collaborating with the NASA Ames Research Center to perform number research efforts support NASA's Integrated Vehicle (IVHM) initiatives. These have combined experimental test stand development, laboratory seeded fault testing, and physical...

This research aims to examine the accuracy of a model used in density-based topology optimization conjugate heat transfer systems with an inherently porous solid, such as ceramics. The case study involves investigating fluid flow and inside tube monolithic catalyst support internal. validation includes simulating different rates (0.4, 0.7, 1.1 kg/h) non-reactive environment, utilizing identical honeycomb monolith geometry reported experiments. addresses significant gap existing literature:...

Abstract : The development of machinery health monitoring technologies has taken center stage within the DoD community in recent years. Existing systems, such as Integrated Condition Assessment System (ICAS) for NAVSEA, enable diagnosis mission critical problems using fault detection and diagnostic technologies. These technologies, however, have not specifically focused on automated prediction future condition (prognostics) a machine based current state its available operating failure...

Abstract The electrical transport properties of molten TiO 2 –SiO –Al O 3 –MgO–CaO slags were determined as a function temperature and oxygen partial pressure. To avoid the corrosion crucible materials by this slag at ultra high temperatures, pendant droplet technique was used inside modified floating zone furnace. Electronic ionic transference numbers estimated using stepped-potential chronoamperometry experiments to quantify contribution electronic/ionic conductivity total electric...