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Article

V.V.S. Rao, K. Krishna Veni and P.K. Sinha

This paper deals with the experimental investigation and non‐linear finite element analysis of composite wing T‐joints in hygrothermal environments. This study is…

Abstract

This paper deals with the experimental investigation and non‐linear finite element analysis of composite wing T‐joints in hygrothermal environments. This study is concerned with T‐joints subjected to tension (pull‐out) force and their behaviour up to ultimate failure under bone dry and hygrothermal environments. The behaviour of such joints is complex due to the geometry of the joint configuration and laminated construction. T‐joints are also susceptible when exposed to moisture and temperature environments. As a consequence, the stiffness and strength properties of laminates because degraded. A three‐dimensional 20‐noded multidirectional composite element is developed using three‐dimensional super element concept to analyse both unstitched and stitched T‐joints. All the stress components are computed and the failure loads are evaluated using different failure criteria to get better insight into the behaviour of laminated composite wing T‐joints.

Details

Aircraft Engineering and Aerospace Technology, vol. 76 no. 4
Type: Research Article
ISSN: 0002-2667

Keywords

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Article

Martin Kadlec, Robin Hron and Timo Grieser

T-sections of carbon fibre-reinforced composites are prone to delamination because they lack reinforcement through their thicknesses. The purpose of this paper is to…

Abstract

Purpose

T-sections of carbon fibre-reinforced composites are prone to delamination because they lack reinforcement through their thicknesses. The purpose of this paper is to present the structural response of cost-effective laminated T-sections when subjected to various types of loads and impacts.

Design/methodology/approach

The core of the automated manufactured beams is analysed. Pull-off, flange tension, and flange bending were tested for specimens extracted from an I-beam. The failure processes for all of the specimens were investigated in detail, leading to the statistical evaluation of the failure modes.

Findings

A correlation is apparent between the impact damage energy and certain fracture patterns. These results can be used to assess damage tolerance when designing stiffeners, beams, and various complex structures. The increase in strength by 25 per cent was measured for the advanced stitching located in the web section for the flange tension test.

Originality/value

The resistance displayed by the T-sections toward impact damage was studied experimentally, as the literature describing this topic is limited. The prevalence of one fracture mode for higher impact energies shows a possible advantage of the cost-effective preforms for the damage tolerant philosophy.

Details

International Journal of Structural Integrity, vol. 6 no. 1
Type: Research Article
ISSN: 1757-9864

Keywords

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Article

Marina Trkman and Peter Trkman

The purpose of this paper is to analyse the benefits and challenges of using a wiki as an intranet/content management system in a company.

Abstract

Purpose

The purpose of this paper is to analyse the benefits and challenges of using a wiki as an intranet/content management system in a company.

Design/methodology/approach

Combined with elements of action research, a longitudinal case study of implementing a wiki in a department of a Slovenian company was conducted. Interviews, surveys and a log analysis were used for the data collection. The Delone and McLean information systems success model was the underlying theoretical approach to explore the information, systems and service quality.

Findings

While a wiki may bring important benefits and change to a company's information/knowledge management, the main challenges remain the same as with earlier technological solutions. Additional problems arise due to cultural issues, the lack of control over quality and the fact that service quality largely depends on the users.

Research limitations/implications

A single case study within one company was conducted.

Practical implications

The findings are important for any manager or developer intending to implement a wiki as an intranet solution as they identify and classify potential challenges.

Originality/value

As one of the first longitudinal case studies of implementing a wiki, several new challenges of Web 2.0 applications and of creating online environments for knowledge sharing are identified, while well‐studied problems concerning other projects seeking to develop information systems also apply. A novel extension to the Delone and McLean model is proposed.

Details

Online Information Review, vol. 33 no. 6
Type: Research Article
ISSN: 1468-4527

Keywords

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