An experimental investigation of noise level for various applietions

مقدم أطروحة جامعية

Rashid, Yasin Hamid

الجامعة

الجامعة التكنولوجية

الكلية

قسم هندسة المكائن و المعدات

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2006

الملخص الإنجليزي

The developed society has an increased requirement which forces human to develop machines, tools, electrical generators, industry and highways.

All the latter develop noise, which may exceed the harmful level.

In this work the noise that harmful is developed from the electrical generators at deferent directions and for range of distance.

A software is used to analyze the noise detected by microphone and it is converted by Fourier Transform F.T.

to the frequency domain to identify the noise level and the frequencies that are developed from electrical generator.

The noise level is compared with the maximum acceptable level.

Some noise becomes dangerous to human life.

In this work some of these noise sources are studied and identify the noise level to limit that may affect the human being health.

>DF created The SPL (Sound Pressure Level) as a function of distance at eight directions for the Electrical Generator, it shows that the direction that is opposite to the silencer from 5 (South) to N (North) shows higher noise level compared to that in the silencer direction from S to N.

Then at high distance i.e.

at 14 m it gives noise level of 51 dB, 40 dB for E (East) and W (Weast) respectively.

التخصصات الرئيسية

الهندسة الميكانيكية

الموضوعات

• الضوضاء
• المولدات الكهربائية

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305416