3 ms·

How do you design for and validate "rugged"-ness? Are there standardized tests?

shubhamharnal 5y ago
The US military has standards, though I don't know which, if any does this product try to meet/comply with: MIL-STD-167: is a test method standard for mechanical vibration of shipboard equipment MIL-S-901D: is a Navy test specification for shock to simulate explosions in the water next to a ship or submarine. For the curious, you can grab PDFs at: https://cp-techusa.com/knowledge-zone/military-specifications/ https://cp-techusa.com/knowledge-zone/military-specification...
- somerandomqaguy 5y ago
  They're claiming a few different specs: ============================== Parvus DuraCOR Pi * Raspberry Pi CM4, model CM4108032. * Low-SWaP IP67 rugged chassis [...] * MIL-STD-810, DO-160, MIL-STD-461 qualification (EMI, thermal, shock, vibration, altitude, humidity, etc.) ============================== - https://www.curtisswrightds.com/products/computing/systems/sff/duracor-pi.html#tabbed-table2 https://www.curtisswrightds.com/products/computing/systems/s...
- c_o_n_v_e_x 5y ago
  The USS Gerald Ford recently underwent shock testing: https://www.youtube.com/watch?v=lDDohTHEfOI https://www.youtube.com/watch?v=lDDohTHEfOI Amazon did one on their Snowball server: https://www.youtube.com/watch?v=__ooXhq5gZ4 https://www.youtube.com/watch?v=__ooXhq5gZ4
- nonrandomstring 5y ago
  One of the few applications you can still use leaded solder, as it's less brittle. Even though the board can be hardened, and temperature ranges of the Broadcom seem acceptable, what bothers me is that the Broadcom still boots via unauditable "mystery" code in the GPU. Am still correct, or has that changed?
colechristensen 5y ago
Yes, many of them. "Rugged" is of course just a word to brag about, they will actually claim "meets MIL-STD-{xxxx}" and that standard will include things like manufacturing, materials, and test procedures. For example, operating in a temperature controlled environment at various extremes, being put on a precisely controlled vibration device for a certain amount of time, being exposed to RF or radiation, etc.

The US military has standards, though I don't know which, if any does this product try to meet/comply with: MIL-STD-167: is a test method standard for mechanical vibration of shipboard equipment MIL-S-901D: is a Navy test specification for shock to simulate explosions in the water next to a ship or submarine. For the curious, you can grab PDFs at: https://cp-techusa.com/knowledge-zone/military-specifications/ https://cp-techusa.com/knowledge-zone/military-specification...

somerandomqaguy 5y ago
They're claiming a few different specs: ============================== Parvus DuraCOR Pi * Raspberry Pi CM4, model CM4108032. * Low-SWaP IP67 rugged chassis [...] * MIL-STD-810, DO-160, MIL-STD-461 qualification (EMI, thermal, shock, vibration, altitude, humidity, etc.) ============================== - https://www.curtisswrightds.com/products/computing/systems/sff/duracor-pi.html#tabbed-table2 https://www.curtisswrightds.com/products/computing/systems/s...
c_o_n_v_e_x 5y ago
The USS Gerald Ford recently underwent shock testing: https://www.youtube.com/watch?v=lDDohTHEfOI https://www.youtube.com/watch?v=lDDohTHEfOI Amazon did one on their Snowball server: https://www.youtube.com/watch?v=__ooXhq5gZ4 https://www.youtube.com/watch?v=__ooXhq5gZ4
nonrandomstring 5y ago
One of the few applications you can still use leaded solder, as it's less brittle. Even though the board can be hardened, and temperature ranges of the Broadcom seem acceptable, what bothers me is that the Broadcom still boots via unauditable "mystery" code in the GPU. Am still correct, or has that changed?

colechristensen 5y ago

Yes, many of them. "Rugged" is of course just a word to brag about, they will actually claim "meets MIL-STD-{xxxx}" and that standard will include things like manufacturing, materials, and test procedures. For example, operating in a temperature controlled environment at various extremes, being put on a precisely controlled vibration device for a certain amount of time, being exposed to RF or radiation, etc.