Search results

1 – 10 of over 20000
Article
Publication date: 15 March 2019

Sampath S., Chithirai Pon Selvan M., Mohamed Ameen K. and Mohamed Amin I.

The purpose of this paper is to present the design and development of transfer seat system which aids the disabled drivers to get in and out of the car without outside help…

Abstract

Purpose

The purpose of this paper is to present the design and development of transfer seat system which aids the disabled drivers to get in and out of the car without outside help thereby reducing physical effort. The design of the model is carried out taking into account the vehicle specification and the weight of the person. After careful measurement and analysis, the required seat system parameters were estimated. The three movements associated with the system are satisfied with motors controlled by switches. The design calculations and the tests carried out are validated using the ANSYS finite element software.

Design/methodology/approach

The whole process begins with the definition of the problem of eliminating the support of an additional person to help people with disabilities enter and leave a car, making it feasible and economical for the patients. Literature review includes and develops information from different sources. The research gap is identified and a necessary improvement is proposed. Design and analysis involves optimum design and calculation that achieves the efficiency, reliability and comfortable movement of the system. It also involves validation to support stress analysis in the system that is performed using ANSYS. The material supply includes the required materials taking into account factors such as strength, durability and availability. Manufacturing selects appropriate manufacturing techniques taking into account design, materials and space limitation. Operations such as welding, cutting, drilling and grinding are considered. The tests consist of performing a physical test to check the approximate load capacity of the system for a gentle, comfortable and secure comfort. Validation ensures that the results of the test coincide with the existing results of the supporting documentation. This process also involves taking corrective action and re-doing the design process to achieve the desired results.

Findings

The results that are plotted suggest that with the increase in downward force, the power required to balance it is greater. Similarly, the speed increases with increasing power. ANSYS analysis can be performed for the support structure and for obtaining deformation. The entire work can be implemented on the actual vehicle, and the time required for the patient to enter and exit could be calculated. The entire transfer system that operates by the engine can be modified, and a hydraulic system can be used to make the movements possible. The section of the rail can also be modified accordingly, and the comparison of the possible results can be carried out with the present system.

Research limitations/implications

The entire system can be improvised by working on the mechanism which reduces the overall operating time without causing discomfort to the user when entering and exiting the car. Furthermore, the safety feature must be considered in the car to prevent the mechanism from altering the seating position of the seat, for which a mooring system can be inserted with a switch to hold it in place and release it. A powerful motor can be integrated into the mechanism to improvise the second movement, which is the deployment of the legs on the ground with the motorized wheels. The set of cast iron rails is used to support more weight without failure.

Practical implications

The main objective is to design a system that allows a disabled person to enter and exit easily without the support or assistance of a second person. The design process had to be modified, and various methods were tried to incorporate this flawless movement onto the chassis of the car. Necessary changes have been made in the case of the material used and of the yarn to obtain the desired movement at the desired speed at the desired time. By performing these three movements, the secondary objective had to be integrated into the system to automate the door to facilitate the entry and exit of the car and to open the door simply by pressing a button. These results were taken into account to make the engine speed changes and the speed at which the chair will descend and move horizontally to ensure a safe design.

Social implications

The developed transfer seat system can be widely used in healthcare sectors which greatly helps the movement of disabled persons.

Originality/value

The design calculations and tests carried out are validated using the ANSYS®, a finite element software.

Details

World Journal of Engineering, vol. 16 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Book part
Publication date: 8 April 2005

Fredrik von Corswant

This paper deals with the organizing of interactive product development. Developing products in interaction between firms may provide benefits in terms of specialization…

Abstract

This paper deals with the organizing of interactive product development. Developing products in interaction between firms may provide benefits in terms of specialization, increased innovation, and possibilities to perform development activities in parallel. However, the differentiation of product development among a number of firms also implies that various dependencies need to be dealt with across firm boundaries. How dependencies may be dealt with across firms is related to how product development is organized. The purpose of the paper is to explore dependencies and how interactive product development may be organized with regard to these dependencies.

The analytical framework is based on the industrial network approach, and deals with the development of products in terms of adaptation and combination of heterogeneous resources. There are dependencies between resources, that is, they are embedded, implying that no resource can be developed in isolation. The characteristics of and dependencies related to four main categories of resources (products, production facilities, business units and business relationships) provide a basis for analyzing the organizing of interactive product development.

Three in-depth case studies are used to explore the organizing of interactive product development with regard to dependencies. The first two cases are based on the development of the electrical system and the seats for Volvo’s large car platform (P2), performed in interaction with Delphi and Lear respectively. The third case is based on the interaction between Scania and Dayco/DFC Tech for the development of various pipes and hoses for a new truck model.

The analysis is focused on what different dependencies the firms considered and dealt with, and how product development was organized with regard to these dependencies. It is concluded that there is a complex and dynamic pattern of dependencies that reaches far beyond the developed product as well as beyond individual business units. To deal with these dependencies, development may be organized in teams where several business units are represented. This enables interaction between different business units’ resource collections, which is important for resource adaptation as well as for innovation. The delimiting and relating functions of the team boundary are elaborated upon and it is argued that also teams may be regarded as actors. It is also concluded that a modular product structure may entail a modular organization with regard to the teams, though, interaction between business units and teams is needed. A strong connection between the technical structure and the organizational structure is identified and it is concluded that policies regarding the technical structure (e.g. concerning “carry-over”) cannot be separated from the management of the organizational structure (e.g. the supplier structure). The organizing of product development is in itself a complex and dynamic task that needs to be subject to interaction between business units.

Details

Managing Product Innovation
Type: Book
ISBN: 978-1-84950-311-2

Article
Publication date: 1 April 1965

R.V. Mason

A Review of Developments in Aircraft Seating in Recent Years and a Description of the Engineering and Commercial Requirements which Affected the Choice of Suitable Seating for…

Abstract

A Review of Developments in Aircraft Seating in Recent Years and a Description of the Engineering and Commercial Requirements which Affected the Choice of Suitable Seating for Britain's Latest Long‐Range Civil Airliner. AIRCRAFT seats to the aircraft engineer have usually referred, in the past, to those somewhat necessary last minute evils that are attached to the cabin floor and are often found very useful for the parking of tool boxes and other maintenance impedimenta. When it is considered that on present day inter‐continental jets the passenger has to ‘live in’ the scat for 28 hours on a typical London/Far East flight without such luxuries as the leisurely night stops of ten years ago, it will be appreciated how important seat design and comfort can be.

Details

Aircraft Engineering and Aerospace Technology, vol. 37 no. 4
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 September 1950

C.H. Cumberland and G.S. Bowey

THE passenger seat in civil aircraft is an important piece of equipment. It is important, firstly because it is the one part of the aircraft with which the passenger is in…

Abstract

THE passenger seat in civil aircraft is an important piece of equipment. It is important, firstly because it is the one part of the aircraft with which the passenger is in intimate contact and, secondly, because of the bulk and multiplicity of installation in any aircraft, the aggregate weight constitutes a major portion of equipment weight.

Details

Aircraft Engineering and Aerospace Technology, vol. 22 no. 9
Type: Research Article
ISSN: 0002-2667

Abstract

Details

The Handbook of Road Safety Measures
Type: Book
ISBN: 978-1-84855-250-0

Abstract

Details

Traffic Safety and Human Behavior
Type: Book
ISBN: 978-1-78635-222-4

Article
Publication date: 9 May 2016

Gricel Dominguez

The purpose of this paper is to propose a method for the assessment of library space use and user experience by combining seating studies, surveys and observational data.

2083

Abstract

Purpose

The purpose of this paper is to propose a method for the assessment of library space use and user experience by combining seating studies, surveys and observational data.

Design/methodology/approach

Seating usage studies (called seating sweeps), technology-assisted face-to-face surveys and observational data were used to assess library space usage and identify user behaviors.

Findings

Results from the study revealed higher library use than expected and provided insight into user behaviors and patterns.

Practical implications

The methods and study described aid in raising awareness of user experience within library spaces and provide valuable data for space redesign efforts.

Originality/value

The study builds upon methods described by Linn (2013) and combines traditional user experience methodologies to gain insight into library space use and user needs.

Details

New Library World, vol. 117 no. 5/6
Type: Research Article
ISSN: 0307-4803

Keywords

Abstract

Details

Traffic Safety and Human Behavior
Type: Book
ISBN: 978-0-08-045029-2

Article
Publication date: 1 October 1982

TERRY FORD and MRAeS

When the Martin‐Baker Mk. 10 ejection seat was introduced into service, it established significant improvements over earlier seats in many aspects of performance. In the years…

Abstract

When the Martin‐Baker Mk. 10 ejection seat was introduced into service, it established significant improvements over earlier seats in many aspects of performance. In the years since that time, it has been adopted by air forces all over the world and has demonstrated the high degree of reliability associated with this company. Of the many types of aircraft in which the seat is installed, the Panavia Tornado, for example, has the 10A, the RAF Hawk the 10B and the Royal Navy Sea Harrier the 10H, each of these being individually suited to particular requirements.

Details

Aircraft Engineering and Aerospace Technology, vol. 54 no. 10
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 16 November 2018

Masatoshi Muramatsu and Takeo Kato

The purpose of this paper is to propose the selection guide of the multi-objective optimization methods for the ergonomic design. The proposed guide enables designers to select an…

Abstract

Purpose

The purpose of this paper is to propose the selection guide of the multi-objective optimization methods for the ergonomic design. The proposed guide enables designers to select an appropriate method for optimizing the human characteristics composed of the engineering characteristics (e.g. users’ height, weight and muscular strength) and the physiological characteristics (e.g. brain wave, pulse-beat and myoelectric signal) in the trade-off relationships.

Design/methodology/approach

This paper focuses on the types of the relationships between engineering or physiological characteristics and their psychological characteristics (e.g. comfort and usability). Using these relationships and the characteristics of the multi-objective optimization methods, this paper classified them and constructed a flow chart for selecting them.

Findings

This paper applied the proposed selection guide to a geometric design of a comfortable seat and confirmed its applicability. The selected multi-objective optimization method optimized the contact area of seat back (engineering characteristic associated with the comfortable fit of the seat backrest) and the blood flow volume (physiological characteristic associated with the numbness in the lower limb) on the basis of each design intent such as a deep-vein thrombosis after long flight.

Originality/value

Because of the lack of the selection guide of the multi-objective optimization methods, an inappropriate method is often applied in industry. This paper proposed the selection guide applied in the ergonomic design having a lot of the multi-objective optimization problem.

Details

Journal of Engineering, Design and Technology, vol. 17 no. 1
Type: Research Article
ISSN: 1726-0531

Keywords

1 – 10 of over 20000