| ID (ISN) del documento | 59744 |
| Número CIS |
93-644 |
| ISSN - Título de la serie |
0002-8894 - American Industrial Hygiene Association Journal |
| Año |
1991 |
| Número de serie |
|
| Autor(es) |
Pääkkönen R., Vienamo T., Järvinen J., Hämäläinen E. |
| Título |
Development of a new noise helmet |
| Información bibliográfica |
Oct. 1991, Vol.52, No.10, p.438-444. Illus. 19 ref. |
| Resumen |
A prototype for a new noise helmet was developed because high noise levels were not sufficiently attenuated by commercially available helmets. The new helmet was designed to be tight, especially in the area of the throat and face, and to cover the entire head. The noise attenuation properties of the new helmet were tested against pink noise in an anechoic room, jet engine noise, and low-frequency noise with the test subjects wearing a miniature microphone under the protector. The new helmet provides insertion loss of over 50dB, which is 18-29dB more attentuation than that of the tested earmuffs in the frequency range of 1-8kHz. It is also better (8-13dB) than the tested earmuffs at frequencies of 125-1000Hz, and it protects against air impurities because the air fed into the helmet is filtered. |
| Descriptores (primarios) |
protección del oído; ruido; nivel de ruido; pruebas del material; atenuación del ruido; cascos antiruido; lucha contra el ruido |
| Descriptores (secundarios) |
descripción del material; diseno del material; conchas antiruido |
| Tipo de documento |
D - Artículos periódicos |
| País / Estado o Provincia | Finlandia |
| Tema(s) |
Ruido, audición, vibraciones
|
| Broad subject area(s) |
Riesgos físicos
|
| Navegación por categoria(s) |
Noise
Hearing protection
|
