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Strain-based running-reliability characterisation in time-domain for risk monitoring under various load conditions

Singh S.S.K., Abdullah L., Abdullah S., Azman A.H., Ariffin A.K.

Eksploatacja i Niezawodność

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2024

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Vol. 26, no. 3

art. no. 186825

EN

This aim of this paper is to characterise the strain-based fatigue life data in time-domain using the newly modelled running-reliability technique that considers the load sequence effect. Current established conventional strain life models do not consider dependence for fatigue life of low or high amplitudes, on which with occur first in the load history. Finite element analysis is carried out to ensure the strain signals are captured at the most critical region during road test at various conditions. Fatigue life of 2.74 × 104 to 6.07 × 105 cycle/block with mean cycle to failure of 4.32 × 106 to 7.00 × 106 cycle/block is predicted based on the cycle sequence effect using cycle-counting method. The newly modelled running-reliability technique is formulated to extract the features of high amplitude excitation obtained from the strain signals for characterising the fatigue reliability features under load sequence effect. Hence, the reliability-hazard relationship for fatigue reliability characterisation of strain-based approach in time-domain using running-reliability technique.

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Zarządzanie ryzykiem, jako warunek konieczny zapewnienia bezpieczeństwa informacji w instytutach badawczych

Dębicka E.

Logistyka

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2012

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nr 3

PL

Instytuty badawcze ze względu na swój znaczny udział w budowaniu nowoczesnej gospodarki opartej na wiedzy powinny przede wszystkim zapewnić bezpieczeństwo informacji, gdyż jest ona ich najcenniejszym aktywem. Podstawowym elementem systemu zarządzania bezpieczeństwem informacji w instytutach badawczych jest zarządzanie ryzykiem. W artykule podjęto próbę przedstawienia działań składających się na kompleksowe zarządzanie ryzykiem w instytutach badawczych. Skutecznie przeprowadzony proces zarządzania ryzykiem ma na celu przede wszystkim jego ograniczenie i zabezpieczenie się przed jego negatywnymi skutkami.

EN

The research institutes due to their significant contribution to building modern economy relying on the knowledge, should first of all, ensure security of the information, as it is their most valuable asset. The fundamental element of the information security management system at the research institutes is the risk management. The article attempts to present the actions that amount to a comprehensive risk management at the research institutes. Effectively carried out process of the risk management is aimed, first of all, at limiting it and protecting against it is negative consequences.

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Evaluation of influence of identified changes in the state of the information system on information security grade

Klasa T.

Foundations of Computing and Decision Sciences

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2011

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Vol. 36, No. 3-4

229-242

EN

Information security became a significant problem for micro and SME companies, especially at the time of worldwide crisis and growing tough competition. While large organizations and institutions have already implemented their own information security management systems, smaller companies mostly claimed that in their case it is not a risk that requires further attention. As a result, even if information security was analyzed and evaluated in a form of internal or external audit, very often no complex plan of system monitoring was prepared. This was based on the assumption that the information system of the company acts as described in the model evaluated during audit. Thus, monitoring was limited to chosen functional areas of the system with limited analysis of dependencies between various local counter measures. Proposed evaluation of influence on information security grade provides necessary analysis of such dependencies to determine whether security grade confirmed by the audit procedure is held despite some elements did not comply with the model. In simple words, proposed evaluation shows if the system as a whole is comparably secure, or not. Because proposed evaluation includes analysis of individual preferences and requirements, it can be easily adjusted to any size and type of the company.