off then
on again and got three good consistant readings in succesion.
-Original Message-
From: william kievit [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 05, 2003 11:40 AM
To: [EMAIL PROTECTED]
Subject: Re: ShopTalk: ascending frequency readings???
My guess is that you are
companies and got blank stares.
- Original Message -
From:
william kievit
To: [EMAIL PROTECTED]
Sent: Wednesday, November 05, 2003 10:40
AM
Subject: Re: ShopTalk: ascending
frequency readings???
My guess is that you are measuring a hysteresis (internal fric
My guess is that you are measuring a hysteresis (internal friction) effect.
This is not uncommon in spring analysis. The losses are due to friction at the molecular level. Plated surfaces also introduce hysteresis to a system.
The greater the displacement the greater the loss and reduction in na
"Letourneau, Henry J" <[EMAIL PROTECTED]> wrote:
At 12:45 PM 11/5/03 +0800, Bruce Tunnicliffe wrote:
It could be the way your frequency counter is designed if it has an optical
sensor.
I'll explain:
The simplest way to make an typical optical sensor results in the frequency
counter to start countin
Hi Jim,
I did some rather "anal" testing on shafts for an article I wrote for the
PCS Journal earlier this year. I ran into the same problem. The more I
twanged the shaft the higher the frequency. This was with a Club Scout IV
which reads to a tenth and the phenomenon was very easy to see. It had
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Letourneau, Henry J AM1(AW) (VAW120)
Sent: Wednesday, 5 November 2003 3:56 PM
To: '[EMAIL PROTECTED]'
Subject: RE: ShopTalk: ascending frequency readings???
Jim,
If it doesn't do it with ot
vember 04, 2003 11:46 PM
> To: [EMAIL PROTECTED]
> Subject: RE: ShopTalk: ascending frequency readings???
>
> Jim,
> It could be the way your frequency counter is designed if it has an
> optical
> sensor.
> I'll explain:
> The simplest way to make an typical
Jim,
It could be the way your frequency counter is designed if it has an optical
sensor.
I'll explain:
The simplest way to make an typical optical sensor results in the frequency
counter to start counting when it sees a change from "dark to light" (i.e.
when the shaft just stops blocking the light
