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2013

Impact

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Articles 31 - 32 of 32

Full-Text Articles in Engineering

Incremental Service Level Agreements Violation Handling With Time Impact Analysis, Azlan Ismail, Jun Yan, Jun Shen Jan 2013

Incremental Service Level Agreements Violation Handling With Time Impact Analysis, Azlan Ismail, Jun Yan, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

This research addresses a critical issue of service level agreement (SLA) violation handling, i.e., time constraint violation related to service-based systems (SBS). Whenever an SLA violation occurs to a service, it can potentially impact dependent services, leading to unreliable SBS. Therefore, an SLA violation handling support is much required to produce a robust and adaptive SBS. There are several approaches to realizing exceptions and faults handling support for SBS, focusing on the detection stage, the analysis stage, and the resolution stage. However, the current works have not considered the handling strategy that takes the impact information into account to reduce …


Impact Mechanics Of A Lap Joint: A Theoretical-Based Parametric Study, Seyed Amir Mansoor Rahmani Jan 2013

Impact Mechanics Of A Lap Joint: A Theoretical-Based Parametric Study, Seyed Amir Mansoor Rahmani

Electronic Theses and Dissertations

The failure of a single connection can cause overload on other structural members, which may consequently fail. Thus, the behavior of damaged or worn joints is of particular concern. In order to represent a loose lap joint, a beam impacting four springs with gaps is modeled. A basis analysis reveals impulse frequency responses with unique dynamic phenomena. Using steady state response, six influential parameters are studied: damping ratio, contact stiffness, position of intermediate springs, gaps, excitation amplitude and beam height. For all parameters, the system response was highly controlled by modes with two contacting springs. Regarding damping, increasing damping ratio …