Failures of Berlin Freedom Bell since 1966

被引：3

作者：

Bettge, D. ^{[1
]}

Bork, C. -P. ^{[1
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, D-12205 Berlin, Germany

来源：

ENGINEERING FAILURE ANALYSIS | 2014年 / 43卷

关键词：

Berlin Freedom Bell; Clapper; Fatigue fracture; Clapper hanging; LIBERTY BELL;

D O I：

10.1016/j.engfailanal.2013.11.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

On October 24th 1950 the "Freedom Bell" rung for the first time in the tower of the former West Berlin town hall. One year after the Berlin blockade and at a first climax of the "Cold War", the "American National Committee for a Free Europe" donated the bell to the city of West Berlin. The bronze bell has a weight of about 10 tons. Its clapper has a length of 2.40 m and a weight of nearly 1 ton. In 1966 the hanging of the clapper and in 1979 the clapper of the bell broke down. Both failures were found to be caused by fatigue fracture. In 1974, a crack in the bell body was detected. After years of periodic monitoring using non-destructive testing, the crack was closed in 2001. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：63 / 76

页数：14

共 15 条

[1]

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[2]

[Anonymous], 1966, NEWSPAPER TAGES 0821

[3]

[Anonymous], 1974, BAM TEST REPORT 1058

[4]

[Anonymous], 2001, BERLINER ZEITUN 0601

[5]

[Anonymous], 1979, NEWSPAPER TAGES 1120

[6]

[Anonymous], 1963, J FRANKLIN I, V275, P161

[7]

[Anonymous], 2004, NEWSPAPER TAGES 1120

[8]

Berger C, 2011, 5 INT C VER HIGH CYC

[9] Dynamics of a clapper-to-bell impact [J].

Klemenc, Jernej ;

Rupp, Andreas ;

Fajdiga, Matija .

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2012, 44 :29-39

[10]

Klinger C., 2005, BAM TEST REPORT V 3

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