Forum: Reliability & Maintainability Questions and Answers

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

Previous 5 messages

Posted by: Lae Won Kim (laewonee@rotem.co.kr )
Organization:Rotem Company
Date posted: Tue May 6 10:51:12 US/Eastern 2003
Subject: MTTR
Message:
What is the distributon type of MTTR statistically?
If it is a normal distribution, who first demonstrate the ditribution type? Thank you

Replies: (list all replies)
Maintenance Distributions
BWD Wed Apr 16 15:04:55 US/Eastern 2003
Appreciation
L.W.Kim Wed Apr 16 18:24:13 US/Eastern 2003

Reply to this message


Posted by: Glen Hanington (ghanington@elgar.com )
Organization:Elgar Electronics
Date posted: Fri Apr 11 12:16:45 US/Eastern 2003
Subject: Component Derating
Message:
I'm looking to upgrade my company's Component Derating Guideline, which was written over 15 years ago. Can you give me some guidance in this? What are the best sources for this type of information as it pertains to today's components?

Replies:
Derating
B. W. Dudley Fri Apr 11 14:03:18 US/Eastern 2003

Reply to this message


Posted by: Bob Cerami
Date posted: Tue Apr 8 9:51:45 US/Eastern 2003
Subject: maintenance manhour per flight hour
Message:
Does anyone know a web site that contains the MMH/FH for US Army helicopters?

Replies:
Data Base Resources
Gary Sunada Fri Apr 11 13:47:22 US/Eastern 2003

Reply to this message


Posted by: Kevin Silke
Date posted: Mon Apr 7 17:43:30 US/Eastern 2003
Subject: MLCC Derating
Message:
In a power supply we are designing, there is a multilayer ceramic chip capacitor that can see a significant ripple current. Our normal derating criteria in this case is to calculate the temperature rise of the part, ensure that we still have 10C of margin against the rated max temperature in the worst case environment, and add some additional voltage derating if the part temperature gets within 40C of the max rated temperature. But this allows for a significant temperature rise in the part. Is there a limit on the allowable temperature rise that I should be using?

Replies:
Chip Capacitor Temperature Rise
James Gormady Thu Apr 17 14:33:08 US/Eastern 2003

Reply to this message


Posted by: David Vermeis (dvvermeis@lambtech.com )
Organization:Lamb Assembly & Test
Date posted: Thu Apr 3 11:43:50 US/Eastern 2003
Subject: FRACAS software
Message:
We are interested in purchasing a FRACAS software package. I would appreciate any advise, suggestions, or opinions regarding available packages. If you have purchased a software package and like it or were disappointed please email me at the address listed below. Thanks for your help.
David Vermeis dvvermeis@lambtech.com

Replies: (list all replies)
FRACAS
Peter Jones Fri Apr 4 13:23:32 US/Eastern 2003
FRACAS
Ed Adams Fri Apr 4 14:02:09 US/Eastern 2003
FavoWeb
Karin Sun May 23 9:08:50 US/Eastern 2004

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