Development and Evaluation of Integrity Assessment Tests for Polymeric Hermetic Seals

2006 ◽  
Author(s):  
Kevin Kit
2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Saeed Mousa ◽  
Hossam El-Din M. Sallam ◽  
Gap-Yong Kim ◽  
Amr A. Abd-Elhady

2020 ◽  
Vol 78 (12) ◽  
pp. 1276-1285
Author(s):  
Shibu John A

Enterprise asset management (EAM) systems are used by asset owners and/or operators to manage the maintenance of their physical assets. These assets, including equipment, facilities, vehicles, and infrastructure, need maintenance to sustain their operations. An EAM system provides the means to have less unplanned downtime and extended asset longevity, which offers clear business benefits that improve the profit and loss statement and balance sheet. Particularly for capital-intensive industries, like drilling and exploration, the failure of on-time delivery of critical equipment or processes is disruptive and costs nonproductive time and customer satisfaction. Organizations understand these issues and employ an appropriate asset management system to engineer their asset maintenance and management. An EAM system is needed to manage the people, assets/equipment, and processes. EAMs are used to plan, optimize, execute, and track the needed maintenance activities with associated priorities, skills, materials, tools, and information. Similarly, nondestructive testing (NDT) is used as a tool for integrity assessment of assets in drilling and exploration. The main advantage of using NDT is that the item’s intended use or serviceability is not affected. The selection of a specific technique should be based on knowledge and skills that include design, material processing, and material evaluation. Validating the purpose of this paper, we emphasize the importance of optimizing the asset utilization and serviceability to enhance overall efficiency by integrating EAM software that manages assets, the operation management system (OMS) controlling the processes, and asset inspection management systems (AIMSs).


2019 ◽  
Author(s):  
Adib Rifqi Setiawan

It is requisite that each activity is necessary to have a clear purpose as it was designed to be a well applicable plan. Scientific literacy indicates that science has value outside scientific practice is hardly modern idea and reality, although we lose sight of this history. Unfortunately, PISA study at 1999-2015 and several preexist works has shows that common science teachings don’t optimally guide students to achieve scientific literacy. As matter of fact, the answer to how to guide student achieving scientific literacy has not been obtained yet. By proposing this work, I am consider that thematic learning as an alternative method to guide students on achieving scientific literacy. Thematic learning is an educational method of teaching in which emphasis is given on choosing a specific theme for teaching concepts. It is based on integrating various information and use it to demonstrate the topic. Pedagogy of thematic learning is based on its exploration of broad areas in one theme. I don’t deny that the concept of integrating subjects to teach in Indonesian schools, generally is not new and has not been very successful in the past. In addition, some people consider thematic learning as an opportunity while others view it as having problems. The answer, however, to how thematic learning education implementation has not been studied yet comprehensively. Therefore, thematic learning lesson plans is very important to be designed then implemented. This work constructs lesson plan to guide primary education student on achieving scientific literacy, using R&D approach four-D model: define, design, develop, and disseminate. It gained lesson plan completed by student worksheets also assessment tests as well, that validated by experts and practitioners nor reliability counted based exclusively on test.


Author(s):  
Sunil Bhatia

This chapter investigates how neoliberal globalization is not just an economic concept or an economic condition; rather, it brings with it shifts in the spheres of culture psychology and identity. It specifically analyzes how personality and assessment tests and cross-cultural workshops on identity and difference that are primarily developed from Euro-American psychology are utilized in the Indian information technology and call center industry. The cross-cultural framework developed primarily by Western psychologists provided the most important tools, concepts, and vocabularies to understand “culture” in cultural sensitivity workshops and extended training seminars held for offshore companies, such as in India. These workshops promoted highly reified ideas about culture in which Indian work culture was viewed as inefficient, hierarchical, feudal, and indirect, whereas European culture was framed as egalitarian, professional, assertive, and non-hierarchical. This chapter reveals how neoliberal psychological discourses of self, identity, and happiness are becoming a mainstay of Indian culture and society.


Author(s):  
Baoliang Chen ◽  
Peng Liu ◽  
Feiyun Xiao ◽  
Zhengshi Liu ◽  
Yong Wang

Quantitative assessment is crucial for the evaluation of human postural balance. The force plate system is the key quantitative balance assessment method. The purpose of this study is to review the important concepts in balance assessment and analyze the experimental conditions, parameter variables, and application scope based on force plate technology. As there is a wide range of balance assessment tests and a variety of commercial force plate systems to choose from, there is room for further improvement of the test details and evaluation variables of the balance assessment. The recommendations presented in this article are the foundation and key part of the postural balance assessment; these recommendations focus on the type of force plate, the subject’s foot posture, and the choice of assessment variables, which further enriches the content of posturography. In order to promote a more reasonable balance assessment method based on force plates, further methodological research and a stronger consensus are still needed.


Entropy ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. 901
Author(s):  
Davide Bertini ◽  
Lorenzo Mazzei ◽  
Antonio Andreini

Computational Fluid Dynamics is a fundamental tool to simulate the flow field and the multi-physics nature of the phenomena involved in gas turbine combustors, supporting their design since the very preliminary phases. Standard steady state RANS turbulence models provide a reasonable prediction, despite some well-known limitations in reproducing the turbulent mixing in highly unsteady flows. Their affordable cost is ideal in the preliminary design steps, whereas, in the detailed phase of the design process, turbulence scale-resolving methods (such as LES or similar approaches) can be preferred to significantly improve the accuracy. Despite that, in dealing with multi-physics and multi-scale problems, as for Conjugate Heat Transfer (CHT) in presence of radiation, transient approaches are not always affordable and appropriate numerical treatments are necessary to properly account for the huge range of characteristics scales in space and time that occur when turbulence is resolved and heat conduction is simulated contextually. The present work describes an innovative methodology to perform CHT simulations accounting for multi-physics and multi-scale problems. Such methodology, named U-THERM3D, is applied for the metal temperature prediction of an annular aeroengine lean burn combustor. The theoretical formulations of the tool are described, together with its numerical implementation in the commercial CFD code ANSYS Fluent. The proposed approach is based on a time de-synchronization of the involved time dependent physics permitting to significantly speed up the calculation with respect to fully coupled strategy, preserving at the same time the effect of unsteady heat transfer on the final time averaged predicted metal temperature. The results of some preliminary assessment tests of its consistency and accuracy are reported before showing its exploitation on the real combustor. The results are compared against steady-state calculations and experimental data obtained by full annular tests at real scale conditions. The work confirms the importance of high-fidelity CFD approaches for the aerothermal prediction of liner metal temperature.


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