Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Sun, 31 Oct 2004 12:54:39 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m15.mx.aol.com ([64.12.138.205] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 493096 for lml@lancaironline.net; Sun, 31 Oct 2004 12:11:48 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.205; envelope-from=Newlan2dl@aol.com Received: from Newlan2dl@aol.com by imo-m15.mx.aol.com (mail_out_v37_r3.8.) id q.67.36a5411b (4012) for ; Sun, 31 Oct 2004 12:11:11 -0500 (EST) From: Newlan2dl@aol.com X-Original-Message-ID: <67.36a5411b.2eb676af@aol.com> X-Original-Date: Sun, 31 Oct 2004 12:11:11 EST Subject: Re: [LML] p-static X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1099242671" X-Mailer: 9.0 for Windows sub 5035 -------------------------------1099242671 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hi Terren I have tested some laminates of carbon and found their resistance to current faily hi. Around 10^6 or so which is in the static dissipative region. I'll have to check my notes. As I remember it, the vacuum bagged laminates were oddly less conductive than the open layups. To test this, in one instance I used the inner laminate of my boat for the testing. For this, I placed stainless screws in the laminate at about 20" x 20" at 90 degrees to each other (I had this pattern in my boat for screwing in the wood trim strips). This part of the laminate was about 21 oz of unidirectional carbon in a plus 9 degree, minus 13 degree and 90 degree laminate (matching the load path in the hull). Other laminates I tested were test lamiantes of solid carbon, some with uni, others weaves. I'll try and see what I have in my notes. Dan Dan Newland -------------------------------1099242671 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Hi Terren

I have tested some laminates of carbon and found their resistance to cu= rrent faily hi. Around 10^6 or so which is in the static dissipative r= egion. I'll have to check my notes. As I remember it, the vacuum= bagged laminates were oddly less conductive than the open layups.

To test this, in one instance I used the inner laminate of my boat for=20= the testing. For this, I placed stainless screws in the laminate at ab= out 20" x 20" at 90 degrees to each other (I had this pattern in my boat for= screwing in the wood trim strips). This part of the laminate was abou= t 21 oz of unidirectional carbon in a plus 9 degree, minus 13 degree an= d 90 degree laminate (matching the load path in the hull).

Other laminates I tested were test lamiantes of solid carbon, some= with uni, others weaves. I'll try and see what I have in my notes.

Dan

Dan Newland

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