In 1971 he graduated from the Radio Engineering Department of the Kuibyshev Aviation Institute.

His desire to do research led him to the postgraduate course at the All-Russian Scientific Research Institute for Physical-Engineering and Radiotechnical Metrology, which he brilliantly completed in 1978, having defended his thesis in the field of correlation spectroscopy for the degree of Candidate of Technical Sciences.

Working at the All-Russian Scientific Research Institute for Physical-Engineering and Radiotechnical Metrology, Yudin, having carried out a huge complex of metrological works, achieved that the dynamic light scattering spectrometer he created was the first and the only one in this class and received the status of "equipment of the highest accuracy class". It was on his spectrometer that all imported dynamic light scattering spectrometers supplied to the Soviet Union were verified.

The dynamic light scattering method is based on the construction of autocorrelation function of light scattered on nanoparticles, which is produced by a specialized electronic device - correlator. The first correlator in the Soviet Union was developed by Yudin and occupied the volume of the whole cabinet stuffed with electronic units. Nowadays, each of the Photocor nanoanalysts has a correlator, which is implemented on one board the size of a notebook.

Since 1980, Yudin has headed a scientific laboratory at the National University of Oil and Gas Gubkin University, and since 1989 he has been working at the Oil and Gas Research Institute Russian Academy of Sciences.

All nanoanalysts produced in series in Russia without exception were developed under the guidance of Igor Kronidovich Yudin.