Improving the Accuracy of Fatigue Damage Calculations for Archived Data

AbstractHistorical operational usage data give a ground for fatigue damage estimation. Quality of sensors and recorders two or more decades ago were lower then modern one. Lack of resolution in nz-level measurement and recording leads to some errors in fatigue damage calculations. In this paper author propose a method to improve the accuracy of fatigue damage calculations for archived data. The method takes advantage of typical distribution of accumulated cycles for aircrafts. Small correction in representative nz value taken in calculations can reduce the error in fatigue damage assessment.

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The study of neural estimator structure influence on the estimation quality of selected state variables of the complex mechanical part of electrical drive

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe) ◽

10.23919/epe17ecceeurope.2017.8099370 ◽

2017 ◽

Cited By ~ 1

Author(s):

Dominik Luczak ◽

Adrian Wojcik

Keyword(s):

State Variables ◽

Electrical Drive ◽

Mechanical Part ◽

Estimation Quality

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LIGHTING AND PERFORMANCE: AN ANALYSIS ON LIGHTING EFFICIENCY OF ARCHITECTURE STUDIO

Malaysian Journal of Sustainable Environment ◽

10.24191/myse.v1i1.5563 ◽

2019 ◽

Vol 1 (1) ◽

pp. 92

Author(s):

Fazidah Hanim Husain

Keyword(s):

Learning Environment ◽

Comfort Level ◽

Artificial Lighting ◽

Level Measurement ◽

Acceptable Range ◽

Creative Learning ◽

Illuminance Level ◽

And Performance ◽

Effect Of Light

Lighting is one of the key elements in any space and building infrastructure. Good design for an area in the building requires sufficient light that contributes to the efficiency of the activities. The correct method allows natural light to transmit, reduce heat and glare in providing a conducive learning environment. Light plays a significant influence to the quality of space and contributes focus of the students in an architecture studio. Previous research has shown that the effect of light also controlled emotions, behavior, and mood of the students. The operations of artificial lighting that have been used most of the time in an architecture studio during day and night may create lavishness and inadequacy at the same time. Therefore, this paper focuses on the identifying the quality of light for the architecture studio in UiTM (Perak), to instill a creative learning environment. Several methodologies adopted in this study such as illuminance level measurement using lux meter (LM-8100), and a questionnaire survey in gauging the lighting comfort level from students’ perspective. The study revealed that the illuminance level in the architecture studio is insufficient and not in the acceptable range stated in the Malaysian: Standards 1525:2007 and not evenly distributed. The study also concluded that the current studio environment is not condusive and appears monotonous.

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