睿地可靠度論壇(TW-REDI Forum)

 找回密碼
 立即註冊
查看: 8403|回復: 2
打印 上一主題 下一主題

壽命評估軟體 一問, [複製鏈接]

Rank: 6Rank: 6

UID
24
帖子
55
主題
13
記錄
0
分享
0
日誌
2
閱讀權限
70
最後登錄
2014-1-17
在線時間
69 小時
跳轉到指定樓層
樓主
發表於 2012-6-20 18:15:39 |只看該作者 |倒序瀏覽
本帖最後由 Astro_tsai 於 2012-6-20 19:25 編輯

最近看到一個軟體 Sherlock, 利用這軟體可以評估相關的壽命
以下是他的介紹, 看他後面的範例, 只要找出λ, 套入F(x)=1-R(x), R 套指數分布,
我很好奇如何在vib/temperature cycle 下去評估?



The Sherlock automated design analysis software is capable of providing a comprehensive assessment
of early stage circuit card design and its ability to meet quality, reliability, and durability expectations.
This assessment consists of a number of validated techniques, including physics-of-failure (PoF) based
prediction that takes into consideration the use environment and the required lifetime. PoF modeling is a
science-based approach that analyzes the loads and stresses in an application and evaluates the ability
of materials to endure them from a strength and mechanics of material point of view. The wearout
lifetime prediction will include a level of detail that provides the ability to understand the contributing
factors and make targeted improvements.
The analyzes that this software is capable of performing include:
1. Plated through hole (PTH) lifetime
2. Risk of conductive anodic filament (CAF) formation
3. Solder joint lifetime under thermal cycling
4. Solder joint lifetime under vibration
5. Risk of interconnect failure during mechanical shock
6. Mean time between failure (MTBF) calculation

附件: 你需要登錄才可以下載或查看附件。沒有帳號?立即註冊
PEGATRON QTR

Rank: 7Rank: 7Rank: 7

UID
4
帖子
186
主題
55
記錄
0
分享
0
日誌
0
閱讀權限
100
最後登錄
2023-10-27
在線時間
795 小時
沙發
發表於 2012-6-25 11:40:28 |只看該作者
振動的壽命評估應該是疲勞(fatigue)吧,用的是Steinberg書上的方法。

Rank: 7Rank: 7Rank: 7

UID
8
帖子
144
主題
10
記錄
1
分享
0
日誌
0
閱讀權限
100
最後登錄
2019-6-7
在線時間
393 小時
板凳
發表於 2012-6-25 21:14:36 |只看該作者
本帖最後由 liaojenyi 於 2012-6-25 21:21 編輯


Steinberg Formula 是比較保守的
Wild TN.  Some fatigue properties of solder joints, IBM no. 73Z000421, Jan, 1973.
附件: 你需要登錄才可以下載或查看附件。沒有帳號?立即註冊
您需要登錄後才可以回帖 登錄 | 立即註冊

Archiver|手機版|睿地可靠度論壇(TW-REDI Forum)   

GMT+8, 2024-11-10 10:54 , Processed in 0.059347 second(s), 10 queries .

Powered by Discuz! X2

© 2001-2011 Comsenz Inc.

回頂部