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Abstract

This paper describes the development of a condition monitoring and analysis technique, based on the pulse echo and impulse excitation method, for brickwork structures. The method is applied to structural brickwork columns with different brick and mortar strength combinations. Dynamic time integration finite element analysis modelled the columns’ behaviour under impact loading. The results were transformed to the frequency domain for obtaining the resonant frequencies: the results were successfully compared to those found experimentally and by natural frequency analysis. The effect of a controlled defect was then analysed. Good prediction of dynamic response and resonant frequencies was achieved and the technique is recommended for condition monitoring of brickwork structures.

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References

Bensalem

, Fairfield

C.A.

and Sibbald

“Non-destructive evaluation of the dynamic response of a brickwork arch”. Proc. Instn Civ. Engnrs, J. Struct. & Bldg., Vol. 122, No. 1, in print, 1997.

Sibbald

, Fairfield

C.A.

and Forde

M.C.

“Impulse testing of brickwork sewers”. J. Low Frequency Noise and Vibration, Vol. 14, No. 1, 1995, pp. 43-54.

Ramirez

R.W.

The FFT; fundamentals and concepts. Prentice-Hall, Englewood Cliffs, USA, 1985.

Newland

D.E.

Random vibrations, spectral & wavelet analysis. 3rd Edn, Longman, Harlow, UK, 1994.

British Standards Institution. BS5628: “Code of practice for the use of masonry”. BSI, London, 1985.

Armstrong

D.M.

“Integrity assessment of structures using modal testing”. PhD thesis, Napier University, Edinburgh, 1995.

Bruel & Kjær . Instruction manual: dual-channel signal analyser Type 2034. 1 & 2, Nærum Offset, Nærum, Denmark, 1987.

Sohaney

R.C.

and Nieters

J.M.

“Proper use of weighting functions for impact testing”. Bruel & Kjær, Tech. Rev. 4, Nærum Offset, Nærum, Denmark, 1985.

Bathe

K.J.

Finite element procedures in engineering analysis. Prentice-Hall, Englewood Cliffs, USA, 1982.

10.

Wong

F.L.

and Topping

B.H.V.

“Finite element studies for nondestructive vibration tests”. Comp. & Struct, Vol. 30, No. 3, 1988, pp. 653-699.

11.

Sibbald

, Fairfield

C.A.

and Forde

M.C.

“The use of cepstra, c(τ) for the integrity assessment of brickwork sewers”. J. Brit. Inst. NDT, Vol. 37, No. 5, 1995, pp. 358-362.

12.

Bensalem

, Fairfield

C.A.

and Sibbald

“Application of the impact excitation method to an arch bridge”. Proc. Cent. Year Bridge Conf., Cardiff, 1994, pp. 157-162.

13.

Topping

B.H.V.

and Wong

F.L.

“Finite element modelling of the sonic method of testing masonry structures”. Comp. & Struct., Vol. 41, No. 1, 1991, pp. 109-136.

14.

Chan

H.F.C.

“Non-destructive testing of concrete piles”. PhD thesis, University of Edinburgh, 1987.

Vibration Condition Monitoring of Brickwork Columns

Abstract

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