Standard Tekniska specifikationer · SIS-CEN ISO/TS 7849-2:2022

Akustik - Bestämning av luftburna ljudeffektnivåer från maskiner medelst vibrationsmätning - Del 2: Teknisk metod med bestämning av lämplig strålningsfaktor (ISO/TS 7849-2:2009)

Status: Gällande

Köp denna standard

Standard Tekniska specifikationer · SIS-CEN ISO/TS 7849-2:2022

Akustik - Bestämning av luftburna ljudeffektnivåer från maskiner medelst vibrationsmätning - Del 2: Teknisk metod med bestämning av lämplig strålningsfaktor (ISO/TS 7849-2:2009)
Prenumerera på standarden - Läs mer Dölj
Pris: 1 045 SEK
standard ikon pdf

PDF

Pris: 1 045 SEK
standard ikon

Papper

Pris: 1 672 SEK
standard ikon pdf + standard ikon

PDF + papper

Fler alternativ Färre alternativ
Omfattning
This part of ISO/TS 7849 gives basic requirements for a reproducible method for the determination of the
sound power level of the noise emitted by machinery or equipment by using surface vibration measurements,
together with the knowledge of the machinery specific sound radiation factor in the frequency bands. The
method is only applicable to noise which is emitted by vibrating surfaces of solid structures and not to noise
generated aerodynamically.

This vibration measurement method is especially applicable in cases where accurate direct airborne noise
measurements, e.g. as specified in ISO 3746[7], ISO 3747[8], and ISO 9614 (all parts)[14], are not possible
because of high background noise or other parasitic environmental interferences; or, if a distinction is required
between the total radiated sound power and its structure vibration generated component.

NOTE 1 One of the applications of this part of ISO/TS 7849 is the distinction between the radiation of airborne sound
power generated by structure vibration and the aerodynamic sound power components. Such a distinction is not feasible
with ISO 3744[5], ISO 3745[6], ISO 3746[7] and ISO 9614 (all parts)[14].

NOTE 2 Problems may occur if the noise is generated by small parts of machinery surfaces (sliding contacts, e.g. slip
ring brush or the commutator and the brush in electrical machines).

The methods described in this part of ISO/TS 7849 apply mainly to processes that are stationary with respect
to time.

Recommendations on the selection of frequency bands are given in Annex C

Ämnesområden

Buller förorsakat av maskiner och utrustning (17.140.20)


Köp denna standard

Standard Tekniska specifikationer · SIS-CEN ISO/TS 7849-2:2022

Akustik - Bestämning av luftburna ljudeffektnivåer från maskiner medelst vibrationsmätning - Del 2: Teknisk metod med bestämning av lämplig strålningsfaktor (ISO/TS 7849-2:2009)
Prenumerera på standarden - Läs mer Dölj
Pris: 1 045 SEK
standard ikon pdf

PDF

Pris: 1 045 SEK
standard ikon

Papper

Pris: 1 672 SEK
standard ikon pdf + standard ikon

PDF + papper

Fler alternativ Färre alternativ

Produktinformation

Språk: Engelska

Framtagen av: Akustik och buller, SIS/TK 110

Internationell titel: Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 2: Engineering method including determination of the adequate radiation factor (ISO/TS 7849-2:2009)

Artikelnummer: STD-80033884

Utgåva: 1

Fastställd: 2022-02-23

Antal sidor: 40