Accurate measurement method for crushing strength of small-size spherical nuclear fuel particles

The invention provides a method for measuring the crushing strength of small-size spherical nuclear fuel particles. The method comprises the following steps: step 1, obtaining a small-size spherical nuclear fuel sample; 2, measuring the particle size of the sample particles; step 3, crushing the sample to obtain a crushing load of the sample; and 4, calculating the crushing strength of the sample according to the particle size of the sample particles and the crushing load. According to the measurement method disclosed by the invention, the single spherical nuclear fuel particle is easy to transfer in the whole crushing strength measurement process; according to the method, the diameter and the crushing load of a single spherical nuclear fuel particle can be directly and accurately measured; by adopting the method to measure the crushing strength of the single spherical nuclear fuel particle, the required auxiliary equipment is less, the operation mode is simple and easy to implement, and the measurement effic