INTL 3:770/1 3:770/3
REPLYADDR news-1513678000@discworld.dascon.de
REPLYTO 3:770/3.0 UUCP
MSGID:  3ef378b9
REPLY:  a8b766ef
PID: SoupGate-Win32 v1.05
On 2024-12-09, The Natural Philosopher  wrote:
>> I was surprised you'd use MTBF for a component which is expected to
>> steadily deteriorate due to wear and tear.
>>
>> I though MTBF was more a random failure thing.
>>
> No it isnt that at all.

MTBF is a measure for the rate of failures *during normal lifetime* - ie.

1 / failure rate

It is *not* the lifetime of a component. MTBF is a measure for failures
during the flat part of the bathtub curve. Failures due to end of lifetime
(like normal, not-premature wearout on a fan) are not part of MTBF.

https://www.vitecpower.com/technische-daten/the-difference-betwe
n-mtbf-and-lifetime/
https://www.rs-online.com/designspark/why-l10-life-expectancy-is
key-for-fan-durability-over-mtbf-ratings
https://www.digi.com/support/knowledge-base/understanding-mtbf-m
an-time-between-failures

cu
Michael
--
Some people have no respect of age unless it is bottled.

--- SoupGate-Win32 v1.05
 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
SEEN-BY: 1/19 16/0 19/10 37 80/1 105/81 106/201 123/130 128/187 129/305
SEEN-BY: 142/104 153/757 7715 203/0 218/700 840 220/70 221/1 6 242
SEEN-BY: 221/360 226/17 30 100 227/114 229/110 111 114 200 206 300
SEEN-BY: 229/317 400 426 428 550 616 664 700 705 230/0 240/5832 266/512
SEEN-BY: 267/800 280/5003 282/1038 291/111 292/854 301/1 310/31 320/119
SEEN-BY: 320/219 319 2119 322/757 762 325/304 335/364 341/66 342/200
SEEN-BY: 396/45 423/81 460/58 633/280 712/848 770/1 3 100 330 340
SEEN-BY: 772/210 220 230 902/26 5020/400 5053/58 5075/35
PATH: 770/3 1 218/840 221/6 1 320/219 229/426