Neutron radiography (NR) technique has been adopted to study the water absorption behavior of different kinds of wood plastic composites (WPC). The cold neutron radiography facility (CNRF) of Japan Research Reactor (JRR‐3M) was used in this work. Profiles of the absorbed water thickness of the samples are easily observed and measured from the radiography images. A small difference between NR image data and the measured data has been observed. That water absorption in these composites increases with time is clearly observed from the NR images.
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Islam et al. (2003) studied this question.
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