CN111595951A - Floating floor air sound insulation detection method - Google Patents
Floating floor air sound insulation detection method Download PDFInfo
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- CN111595951A CN111595951A CN202010357230.9A CN202010357230A CN111595951A CN 111595951 A CN111595951 A CN 111595951A CN 202010357230 A CN202010357230 A CN 202010357230A CN 111595951 A CN111595951 A CN 111595951A
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- 238000009413 insulation Methods 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
Abstract
The invention relates to an air sound and sound insulation detection method for a floating floor, which comprises the following steps: a. establishing a laboratory: the laboratory comprises a sound source chamber and a receiving chamber, wherein the sound source chamber is communicated with the receiving chamber through a testing opening, and the sound source chamber and the receiving chamber are both provided with sound insulation doors; b. and (3) measuring point and sound source arrangement: arranging a plurality of sound sources and a plurality of measuring points in a sound source chamber and a receiving chamber, determining the coordinate positions of the sound sources and the measuring points, and mounting a test piece at the measuring point positions; c. and calculating the average sound insulation amount of the test piece. The sound insulation detection method detects the sound insulation quantity of the floating floor in a mode that a plurality of sound sources and a plurality of measuring points are arranged in a sound source chamber and a receiving chamber, and calculates the average sound insulation quantity of the sound insulation quantities of the measuring points to obtain the sound insulation index of the floating floor.
Description
Technical Field
The invention relates to the field of floating floor processing and detection, in particular to an air sound and sound insulation detection method for a floating floor.
Background
During the ship navigation, the large vibration and noise from the ship bottom to the ship bottom reach the bottom of the cabin, and the great influence is generated on the physiology and the psychology of people in the cabin. When a ship sails in humid marine climate for a long time, the humidity in a cabin is usually high, air condensate water easily flows into a gap between an acoustic board or a damping board decorated on a deck and a steel surrounding wall under the influence of cabin air conditioning operation and environment, the problem of water inlet corrosion of the damping board and the acoustic board exists, and necessary measures for vibration reduction, sound insulation and noise reduction are required to be taken to prevent noise and vibration when the use of the damping board and the acoustic board is influenced. The traditional mode adopts shock attenuation board and abatvoix decoration on the deck, after later stage remanufacture, install at present mainly adopting floating floor, floating floor plays and makes an uproar, it is insulating, the effect of fire prevention, in order to guarantee floating floor's result of use and quality, need to make an uproar to floating floor sample, fire behavior tests, use the performance test of making an uproar to test as an example, floating floor sample is when making an uproar the performance test at present, mainly carry out the sound insulation performance through ordinary noise vibration multichannel analytic system and sound level calibrator and detect, detection efficiency is low and do not have one set of complete monitoring method, this patent provides the complete sound insulation detection method of one set of system to the sound insulation performance detection on floating floor.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an air sound and sound insulation detection method for a floating floor.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a floating floor air sound and sound insulation detection method comprises the following steps:
a. establishing a laboratory: the laboratory comprises a sound source chamber and a receiving chamber, wherein the sound source chamber is communicated with the receiving chamber through a testing opening, and the sound source chamber and the receiving chamber are both provided with sound insulation doors;
b. and (3) measuring point and sound source arrangement: arranging a plurality of sound sources and a plurality of measuring points in a sound source chamber and a receiving chamber, determining the coordinate positions of the sound sources and the measuring points, and mounting a test piece at the measuring point positions; the device comprises a sound source chamber, a receiving chamber, a sound source chamber and a sound source control system, wherein the number of sound sources arranged in the sound source chamber and the receiving chamber is two, and the number of arranged measuring points is seven;
c. calculating the average sound insulation amount of the test piece:
the sound insulation quantity calculation formula is as follows:
in the formula:
Ri-sound insulation in decibels (dB);
i-1 or 2, indicating that the sound source is at position 1 or position 2, respectively;
Li1-the mean sound pressure level of the source chamber energy after background noise correction in decibels (dB);
Li2-the background noise corrected average sound pressure level of the receiving chamber energy in decibels (dB);
s-area of test piece installation test hole, unit is square meter (m)2)；
A-sound absorption of the receiving chamber in square meters (m)2)。
The sound absorption quantity calculation formula of the receiving chamber is as follows:
in the formula:
a-sound absorption of the receiving chamber, m2；
V-volume of the receiving chamber in cubic meters (m)3)；
T-is the reverberation time of the receiving chamber in seconds(s);
the average sound insulation quantity calculation formula is as follows:
in the formula:
r is the average sound insulation in decibels (dB);
R1，R2-represents the sound insulation (dB) of the sound source at position 1 or position 2, respectively.
Further, when the coordinate positions of the sound source and the measuring point are determined, one corner of the ground of the sound source chamber and the ground of the receiving chamber is used as a coordinate origin, the direction of the vertical pointing test piece in the ground plane is + X, the direction parallel to the test piece is + Y, and the direction vertical to the ground is + Z; the positive directions of the three directions X, Y and Z are in accordance with the right-hand screw rule.
Further, the test piece is a floating floor.
Further, the test temperature was 31.1 ℃, the atmospheric pressure of the test environment was 101.0kPa, and the relative humidity was 52%.
The invention has the beneficial effects that: the sound insulation detection method comprises the steps of detecting the sound insulation quantity of a floating floor in a mode that a plurality of sound sources and a plurality of measuring points are arranged in a sound source chamber and a receiving chamber, calculating the average sound insulation quantity of the measuring points to obtain the sound insulation index of the floating floor, and when the coordinate positions of the sound sources and the measuring points are determined, taking one corner of the ground of the sound source chamber and the receiving chamber as a coordinate origin, wherein the direction of a vertical pointing test piece in a ground plane is + X, the direction of a parallel test piece is + Y, and the direction of the vertical ground is + Z; the positive directions of the three directions of X, Y and Z accord with the right-hand spiral rule, so that the digital accuracy of the coordinates of a sound source and a measuring point is ensured, the sound insulation detection accuracy is improved, and the method belongs to a set of sound insulation detection method with complete system and high accuracy.
Drawings
FIG. 1 is a schematic layout of sound sources and measuring points inside a sound source chamber and a receiving chamber according to the present invention;
FIG. 2 is a graph of sound insulation performance of the floating floor of the present invention;
fig. 3 is a schematic structural view of a test piece (floating floor) of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, a floating floor air sound insulation detection method includes the following steps:
a. establishing a laboratory: the laboratory comprises a sound source chamber 1 and a receiving chamber 2, the sound source chamber 1 is communicated with the receiving chamber 2 through a testing hole 3, and the sound source chamber 1 and the receiving chamber 2 are both provided with a sound insulation door 4;
b. and (3) measuring point and sound source arrangement: arranging a plurality of sound sources and a plurality of measuring points in a sound source chamber and a receiving chamber, determining the coordinate positions of the sound sources and the measuring points, and mounting a test piece at the measuring point positions; the device comprises a sound source chamber, a receiving chamber, a sound source chamber and a sound source control system, wherein the number of sound sources arranged in the sound source chamber and the receiving chamber is two, and the number of arranged measuring points is seven;
when the coordinate positions of a sound source and a measuring point are determined, one corner of the ground of a sound source chamber 1 and a receiving chamber 2 is used as a coordinate origin, the direction of a vertical pointing test piece (the test piece is a floating floor) in a ground plane is + X, the direction of a parallel test piece is + Y, and the direction of the vertical ground is + Z; the positive directions of the three directions X, Y and Z are in accordance with the right-hand screw rule.
c. Calculating the average sound insulation amount of the test piece:
the sound insulation quantity calculation formula is as follows:
in the formula:
Ri-sound insulation in decibels (dB);
i-1 or 2, indicating that the sound source is at position 1 or position 2, respectively;
Li1-the mean sound pressure level of the source chamber energy after background noise correction in decibels (dB);
Li2-the background noise corrected average sound pressure level of the receiving chamber energy in decibels (dB);
s-area of test piece installation test hole, unit is square meter (m)2)；
A-sound absorption of the receiving chamber in square meters (m)2)。
The sound absorption quantity calculation formula of the receiving chamber is as follows:
in the formula:
a-sound absorption of the receiving chamber, m2；
V-volume of the receiving chamber in cubic meters (m)3)；
T-is the reverberation time of the receiving chamber in seconds(s);
the average sound insulation quantity calculation formula is as follows:
in the formula:
r is the average sound insulation in decibels (dB);
R1，R2-represents the sound insulation (dB) of the sound source at position 1 or position 2, respectively.
Wherein the test temperature is 31.1 ℃, the atmospheric pressure of the test environment is 101.0kPa, and the relative humidity is 52%.
In addition, as shown in fig. 3, the structure of the test piece 10 (floating floor) is described as follows:
the test piece structure comprises galvanized steel sheet 101, damping coating 102, heat insulation material 103, waterproof film 104 and deck dressing 105; the heat insulating material 103 is rock wool (ceramic wool) with a volume weight (density) of 150kg/m3(+ -10) 20mm thick; the thickness of the galvanized steel sheet 101 is 2 mm; the density was 7.85kg/m2；(ii) a The thickness of the damping coating 102 is 2 mm; the density was 1.2g/cm3。；
A waterproof film 104 and a deck covering 105 are laid on the heat insulation material 103, the thickness of the deck covering 105 (with a steel wire mesh 106) is 30mm, and the density is less than or equal to 1500 kg/m3(ii) a The total composite thickness of the test pieces is 54mm, and the composite density is 1200 kg/m3The effective area of the mounting specimen 10 is 3000mm (H) × 4000mm (4000 mm) (W).
During the test, the actual coordinate values of the sound source and the measuring point are as follows:
the instrument and equipment corresponding to the system are detailed as follows:
in addition, the sound pressure levels of the sound source chamber 1 and the receiving chamber 2 are as follows:
TABLE 1-1 Sound Source Room Sound pressure level, Sound Source location (S1) units dB
TABLE 1-2 receiving room sound pressure level Sound Source location (S1) units dB
TABLE 2-1 Sound Source Room Sound pressure level Sound Source location (S2) units dB
TABLE 2-2 sound pressure level Sound Source location in dB (S2) units of the receiving Room
Further, the reverberation time is tested as follows:
TABLE 3-1 reverberation time of the receiving room Sound Source location (S1) units S
TABLE 3-2 reverberation time of the receiving room Sound Source location (S2) units S
In this embodiment, the average sound insulation calculation table of the floating floor obtained according to the above table data and the calculation formula is as follows:
the sound insulation detection method comprises the steps of detecting the sound insulation quantity of a floating floor in a mode that a plurality of sound sources and a plurality of measuring points are arranged in a sound source chamber and a receiving chamber, calculating the average sound insulation quantity of the measuring points to obtain the sound insulation index of the floating floor, and when the coordinate positions of the sound sources and the measuring points are determined, taking one corner of the ground of the sound source chamber and the receiving chamber as a coordinate origin, wherein the direction of a vertical pointing test piece in a ground plane is + X, the direction of a parallel test piece is + Y, and the direction of the vertical ground is + Z; the positive directions of the three directions of X, Y and Z accord with the right-hand spiral rule, so that the digital accuracy of the coordinates of a sound source and a measuring point is ensured, the sound insulation detection accuracy is improved, and the method belongs to a set of sound insulation detection method with complete system and high accuracy.
Claims (4)
1. The air sound and sound insulation detection method for the floating floor is characterized by comprising the following steps:
a. establishing a laboratory: the laboratory comprises a sound source chamber and a receiving chamber, wherein the sound source chamber is communicated with the receiving chamber through a testing opening, and the sound source chamber and the receiving chamber are both provided with sound insulation doors;
b. and (3) measuring point and sound source arrangement: arranging a plurality of sound sources and a plurality of measuring points in a sound source chamber and a receiving chamber, determining the coordinate positions of the sound sources and the measuring points, and mounting a test piece at the measuring point positions; the device comprises a sound source chamber, a receiving chamber, a sound source chamber and a sound source control system, wherein the number of sound sources arranged in the sound source chamber and the receiving chamber is two, and the number of arranged measuring points is seven;
c. calculating the average sound insulation amount of the test piece:
the sound insulation quantity calculation formula is as follows:
in the formula:
Ri-sound insulation in decibels (dB);
i-1 or 2, indicating that the sound source is at position 1 or position 2, respectively;
Li1-the mean sound pressure level of the source chamber energy after background noise correction in decibels (dB);
Li2-the background noise corrected average sound pressure level of the receiving chamber energy in decibels (dB);
s-area of test piece installation test hole, unit is square meter (m)2)；
A-sound absorption of the receiving chamber in square meters (m)2)；
The sound absorption quantity calculation formula of the receiving chamber is as follows:
in the formula:
a-sound absorption of the receiving chamber, m2；
V-volume of the receiving chamber in cubic meters (m)3)；
T-is the reverberation time of the receiving chamber in seconds(s);
the average sound insulation quantity calculation formula is as follows:
in the formula:
r is the average sound insulation in decibels (dB);
R1，R2-represents the sound insulation (dB) of the sound source at position 1 or position 2, respectively.
2. The air sound and sound insulation detection method for the floating floor according to claim 1, characterized in that when the coordinate positions of the sound source and the measuring point are determined, one corner of the ground of the sound source chamber and the receiving chamber is taken as a coordinate origin, the direction of the vertical pointing test piece in the ground plane is + X, the direction parallel to the test piece is + Y, and the direction vertical to the ground is + Z; the positive directions of the three directions X, Y and Z are in accordance with the right-hand screw rule.
3. The floating floor airborne sound insulation detection method of claim 2, wherein the test piece is a floating floor.
4. The method of claim 2, wherein the test temperature is 31.1 ℃, the test environment atmospheric pressure is 101.0kPa, and the relative humidity is 52%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357230.9A CN111595951A (en) | 2020-04-29 | 2020-04-29 | Floating floor air sound insulation detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010357230.9A CN111595951A (en) | 2020-04-29 | 2020-04-29 | Floating floor air sound insulation detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684008A (en) * | 2021-01-13 | 2021-04-20 | 浙江省计量科学研究院 | Intelligent laboratory measurement system for sound insulation quantity of building component |
| CN112781846A (en) * | 2020-12-23 | 2021-05-11 | 盈普声学（惠州）有限公司 | Method for testing pressure drop and airflow regeneration noise of fireproof door and method for detecting fireproof door |
-
2020
- 2020-04-29 CN CN202010357230.9A patent/CN111595951A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781846A (en) * | 2020-12-23 | 2021-05-11 | 盈普声学（惠州）有限公司 | Method for testing pressure drop and airflow regeneration noise of fireproof door and method for detecting fireproof door |
| CN112781846B (en) * | 2020-12-23 | 2023-08-18 | 盈普声学（惠州）有限公司 | Fireproof door pressure drop and airflow regeneration noise testing method and fireproof door detection method |
| CN112684008A (en) * | 2021-01-13 | 2021-04-20 | 浙江省计量科学研究院 | Intelligent laboratory measurement system for sound insulation quantity of building component |
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Application publication date: 20200828 |