DMS 1926 material when no type or class is specified?

[KirbyWan]

Is there a way to get DMS specifications from Boeing? I have access to MyBoeingFleet and get BMS specs all the time, but they don't provide DMS specs as far as I can tell. The only Long Beach document they provide is the DPM Index which has a QPL for the DMS, but nothing else.

My issue is the drawing I'm using to repair a panel lists DMS 1926, but gives no type or class and I was hoping the spec would indicate what to use if no type or class is specified. based on the laminate thickness, .125 for 12 plies I was expecting the fabric is 1581/7781. It has one ply of Type 120 on the outer surface that it does specify by calling out the MIL-C-9084 cloth Type but nothing for the rest of the plies.

thanks,

-Kirby

Kirby Wilkerson

Remember, first define the problem, then solve it.

 

[WKTaylor]

Is DMS1926 a composite material? cloth? Tape? dry? wet? prepreg?

Suggest asking this question in the composites forum...

https://www.eng-tips.com/threadminder.cfm?pid=327

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

 

[KirbyWan]

Sorry, DMS 1926 is for 250° cure pre-preg fabric materials. I need it for a fiberglass panel, but the spec also includes Kevlar fabrics. I found an old copy of the DMS spec that had a cross reference to the equivalent BMS spec for the fiberglass materials. It doesn't have any direction for when no type or class is called out, but the panel isn't structural and I'm pretty sure the material is 1581/7781 based on appearance.

Thanks,

-Kirby

Kirby Wilkerson

Remember, first define the problem, then solve it.