Warning: Creating default object from empty value in /home/chinapiezo/www/www/includes/classes/banner/class.banner.php on line 247

Warning: Creating default object from empty value in /home/chinapiezo/www/www/includes/classes/banner/class.banner.php on line 247

Warning: Creating default object from empty value in /home/chinapiezo/www/www/includes/classes/forum/class.reply.php on line 276

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 659

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 660

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 661

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 662

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 663

Warning: Cannot modify header information - headers already sent by (output started at /home/chinapiezo/www/www/includes/classes/banner/class.banner.php:247) in /home/chinapiezo/www/www/includes/global.php on line 664
--- 中国压电网 ---
中国压电网
| | | | |
 
简体繁体Eng
----
page banner
]
|    本网内容 |
|
----
----
----
----
----
----
----
|
]
]
|    用户帐号 |
|
用户注册 | 忘记密码?
|
]
]
|    通告 |
|
|
]
]
|    在线用户 |
|
  > 在线人数 : 11
  > 访客 : 11
  > 用户 : 0
  > 到访人次共 :
2 6 4 5 1 0 4
|
]
[ >  主页/论坛 ]
]
|

论坛:
声波探头的结构

记录 1 - 1 of 1 |  每页显示:
发放人 讯息
Webmaster 2006-05-19 12:24:18

我是利用压电陶瓷做了一对发射和接受探头(直径25毫米,),压电陶瓷晶片粘贴在不锈钢材料上(分为纵波和横波晶片)。利用高压来 驱动 产生横波和纵波。 利用这对探头来测量声波通过岩心的时间。接收端用示波器来接受。 但是现在存在问题: 示波器上的波形很杂乱,一列波的尾巴比较长。请问是什么原因呢?如何才能改善?如何在示波器上将横波和纵波分开呢??? 因为我是个新手,问的问题可能没说清楚,那个好心人如果知道解决的办法,请加我的 QQ283867514 先谢谢了。我真的很着急的!(ww ww)
天 张  2006-12-18 21:45:53

可能是跟激励频率的选择有关,在一定频率范围内会出现频散,会使图形显示不容易分辨, 

回覆 | 返前



|
]
separator
© 中国压电网 2002-2004 著作权所有 | 服务条款 | 私隐政策
请使用 Internet Explorer 5.0, Netscape 6.0 或以上之浏览器
Powered by <A href='javascript:emailToMe()' style='color:grey'>Sam Lin @Neios</A>