WORK METHODOLOGY FOR DEVELOPMENT OF QUIET PRODUCTS

Informazioni relative al progetto

ID dell’accordo di sovvenzione: BRE20339

Progetto chiuso

Data di avvio 1 Gennaio 1993

Data di completamento 31 Dicembre 1996

Finanziato da

• Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994

Costo totale

Nessun dato

Contributo UE

€ 2 050 000,00

Coordinato da

TNO
Netherlands

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I link ai risultati e alle pubblicazioni dei progetti del 7° PQ, così come i link ad alcuni tipi di risultati specifici come dataset e software, sono recuperati dinamicamente da .OpenAIRE .

Risultati sfruttabili

Work methods for the development of quiet products

A formal methodology was developed describing most relevant information and procedures required during any product design process. Acoustically relevant product data was mapped using the EXPRESS language and procedures were described using the structured analysis and design technique (SADT). Prototype software for a consulting system for low noise design was developed. This system uses the 'component based noise path model' as a means to acoustically model any machine, and to associate any type of qualitative or quantitative information with that model. Help, database, and calculation facilities were developed. The system runs on Windows 95 and NT personal computer (PC). Two measurement methods for characterization of structure-borne noise sources were developed, one dependent on the test environment, the reception structure method, the other independent of the test environment, the pseudo-forces method. In parallel to the methodology development noise control work carried out on 3 different types of machine: excavators, municipal vehicles and water chillers. Noise reductions of 5-11 dB(A) were achieved by applying the methodology in a systematic way.

Knowledge-based system for low-noise design of machinery and equipment

The developed software tool provides a component-based representation of the noise situation of machinery and equipment. This representation provides the means to access help information on low-noise design, and also allows parameter studies for any given machine. In this way, the designer not only can obtain general information on noise reduction measures, but can also assess their individual and combined effect on the total noise level. In this way, the development process of low noise products is speeded up, reducing time to market, providing a common means of presentation and continuity in the specialist field of noise control which is often difficult for designers to deal with.