Forum: Reliability & Maintainability Questions and Answers

Add a Message About this forum
Newer messages are at the top

Previous 5 messages

Posted by: Carlos Alberto Scapin (cscapin @ fdg.org.br )
Organization:SCAPIN CONSULTING
Date posted: Sun Dec 12 5:55:32 US/Eastern 1999
Subject: Fail Rate For Valve
Message:
Iam presently in charge to make a preventive maintenance planning for one Through Conduit Valve, its weight is 22000 kilos , hydraulic operate,water refrigerate and working in a temperature of 950 celcius degree .Its function is to cut the flow of following chemical elements; C O and hydrogen ,every time that unsafe condition appeared.I need any information of failure rate of this type of valve,which will be install in the next month.

Replies:
Valve Data
Seymour Morris Mon Dec 20 10:33:24 US/Eastern 1999

Reply to this message


Posted by: Hei-Ruey Harry Jen (jenh@tycoelectronics.com )
Organization:M/A-Com
Date posted: Fri Dec 10 13:46:48 US/Eastern 1999
Subject: Minimum SiN passivation thickness
Message:
I have always used the 0.5 Ám thick SiN as the guideline for chip passivation. Is there any publication actually prove that is the minimum thickness for a moisture barrier? Please give me the source if you know. Thanks.

Replies: (list all replies)
Passivation Thickness
Seymour Morris Mon Dec 20 16:24:14 US/Eastern 1999
Minimum SiN Passivation Thickness
Kevin Houle Wed Sep 6 11:47:01 US/Eastern 2000

Reply to this message


Posted by: John Sine (jsine@harris.com )
Date posted: Wed Dec 8 12:06:23 US/Eastern 1999
Subject: Battery Reliability
Message:
I am trying to find information on how to calculate the failure rate for batteries (re-chargeable and non-rechargeable) so that I can include them in a system Reliablity & Availability Analysis. Can anyone supply me with the equations and/or the source (refence material) for determining battery failure rates? Thanks for your help.

Replies:
Battery Reliability
Seymour Morris Tue Dec 21 16:30:16 US/Eastern 1999

Reply to this message


Posted by: Laurent Purrey
Date posted: Fri Nov 26 1:14:45 US/Eastern 1999
Subject: MTBMA
Message:
Who can tell me how we can calculate the MTBMA (Mean Time Between Action)for a system. What is its value when the components or system is "ON CONDITION".
NOTE: as assumption, MTBF, MTBUR are available.

Replies:
MTBMA
Bruce Dudley Mon Nov 29 12:00:17 US/Eastern 1999

Reply to this message


Posted by: Peter Kirchhofer (peter.kirchhofer@jaquet.com )
Organization:JAQUET Ltd
Date posted: Thu Nov 25 5:09:20 US/Eastern 1999
Subject: Rear Earth Magnets
Message:
Datasheets specify the Curie temperature and the much lower maximum allowable ambient temperature for the different magnet materials.
Q1: What happens to the magnet during prolonged temperature cycling between normal and above maximum allowable temperature? Q2: Has vibrational stress any influence on the magnetic properties?

Replies:
Magnetic Properties
Bruce Dudley Mon Nov 29 15:37:29 US/Eastern 1999

Reply to this message


Next 5 messages

| 1...5 | 6...10 | 11...15 | 16...20 | 21...25 | 26...30 | 31...35 | 36...40 | 41...45 | 46...50 | 51...55 | 56...60 | 61...65 | 66...70 | 71...75 | 76...80 | 81...85 | 86...90 | 91...95 | 96...100 | 101...105 | 106...110 | 111...115 | 116...120 | 121...125 | 126...130 | 131...135 | 136...140 | 141...145 | 146...150 | 151...155 | 156...160 | 161...165 | 166...170 | 171...175 | 176...180 | 181...185 | 186...190 | 191...195 | 196...200 | 201...205 | 206...210 | 211...215 | 216...220 | 221...225 | 226...230 | 231...235 | 236...240 | 241...245 | 246...250 | 251...255 | 256...260 | 261...265 | 266...270 | 271...275 | 276...280 | 281...285 | 286...290 | 291...295 | 296...300 | 301...305 | 306...310 | 311...315 | 316...320 | 321...325 | 326...330 | 331...335 | 336...340 | 341...345 | 346...350 | 351...355 | 356...360 | 361...365 | 366...370 | 371...375 | 376...380 | 381...385 | 386...390 | 391...395 | 396...400 | 401...405 | 406...410 | 411...415 | 416...420 | 421...425 | 426...430 | 431...435 | 436...440 | 441...445 | 446...450 | 451...455 | 456...460 | 461...465 | 466...470 | 471...475 | 476...480 | 481...485 | 486...490 | 491...495 | 496...500 | 501...505 | 506...510 | 511...515 | 516...520 | 521...525 | 526...530 | 531...535 | 536...540 | 541...545 | 546...550 | 551...555 | 556...560 | 561...565 | 566...570 | 571...575 | 576...580 | 581...585 | 586...590 | 591...595 | 596...600 | 601...605 | 606...610 | 611...615 | 616...620 | 621...625 | 626...630 | 631...635 | 636...640 | 641...645 | 646...650 | 651...655 | 656...660 | 661...665 | 666...670 | 671...675 | 676...680 | 681...685 | 686...690 | 691...695 | 696...700 | 701...705 | 706...710 | 711...715 | 716...720 | 721...725 | 726...730 | 731...735 | 736...740 |

Add a Message About this forum