<strike id="5llnv"></strike><dl id="5llnv"></dl>
<dl id="5llnv"></dl>
<progress id="5llnv"></progress>
<video id="5llnv"></video>
<ruby id="5llnv"></ruby>
<span id="5llnv"></span><dl id="5llnv"><ins id="5llnv"></ins></dl>
<dl id="5llnv"><i id="5llnv"></i></dl>

成功案例

盤(pán)式制動(dòng)襯片的粘接和裂紋缺陷的檢測

更新時(shí)間:2018-04-12 09:14:32點(diǎn)擊次數:3237次

Detection of cracks and bonding defects
in disk brake linings.
盤(pán)式制動(dòng)襯片的粘接和裂紋缺陷的檢測

In our Application Reports 06/97 and 07/97, we reported on ultrasonic testing of brake linings and of bonded joints in brake bodies.
在應用報告06/97 和07/97中,我們講述了在制動(dòng)體中粘接接頭和制動(dòng)襯片的超聲檢測
The present case deals with testing of brake bodies, consisting of a steel base plate, a welded-on grid mat as bonding agent and the sinter-fused braking substance (friction lining),
下圖展示一個(gè)焊接上的網(wǎng)格墊作為粘接劑,鋼基體和燒結熔融的制動(dòng)物質(zhì)組成的制動(dòng)體檢測。

SOLUTION:方案                                   
The present brake lining structure with its extremely high sound absorption and scattering calls for the through-transmission technique using a test frequency of 100 kHz. We recommend the use of the probes type B 0,1 NN for this application case. This probe type enables a dry and point-to-point coupling.
由于制動(dòng)襯片結構具有很高的聲吸收和散射,因此需要頻率為100khz的穿透法技術(shù),推薦使用B0型1 NN 探頭,這種探頭類(lèi)型能夠實(shí)現干式和點(diǎn)對點(diǎn)耦合。
In order to ensure uniform coupling conditions, it is necessary to have a device enabling to reach a pressure force of ~100 N.

為了確保耦合的均勻,需要一個(gè)能夠達到100N壓力的設備

In the case of cracks and bonding defects, a low through-transmission amplitude is obtained due to the reduced acoustic transmittance. On the other hand, a high sound amplitude indicates a flaw-free area.
有裂紋和粘接缺陷的存在情況下,由于降低了聲能的穿透性能,穿透技術(shù)得到的波幅會(huì )很低,另一方面,在沒(méi)有缺陷的區域穿透技術(shù)得到的聲波波幅會(huì )很高。

The following figure is an example of the distribution of the through-transmission amplitude (in % screen height) over the lining surface, obtained by point scanning.
下圖是通過(guò)點(diǎn)掃,在襯面上獲得穿透法波幅高度(示波屏高度百分比)分布的舉例

SUITABLE EQUIPMENT:
設備

Ultrasonic flaw detectors: USM 22L  USD 10NF
超聲儀器
Probe:     B 0,1 NN  (transmitter and receiver)
探頭

Copyright ? 2018 哈爾濱聯(lián)航金屬材料有限公司 技術(shù)支持:巨耀網(wǎng)絡(luò )  黑ICP備18001653號-1

一区三区在线专区在线,久久精品国产精品亚洲蜜月,国产午夜无码精品免费看动漫,美女张开腿让男生桶爽