Contents

Russian Journal of Nondestructive Testing

---

Vol. 58, No. 1, 2022

---

Acoustic Methods

Measuring the Acoustic Characteristics of Compact Concrete Building Structures Using the Impact Echo Method

V. K. Kachanov, I. V. Sokolov, A. A. Samokrutov, V. P. Lunin and S. A. Fedorenko p. 1  abstract

Testing Semiconductor Products Using Low-Frequency Noise Parameters

M. I. Gorlov and V. A. Sergeev p. 10  abstract

On the Issue of Interpretating Echograms in the Contact Technique

A. V. Martynenko p. 23  abstract

Comparison of Damage Distribution and Ultrasonic Nonlinear Responses of Two Typical Plate Structures

G. Zhao, S. Liu, C. Zhang, L. Jin, Lei. Qi and Q. Yang p. 36  abstract

---

X-Ray Methods

Algorithm for Evaluating Errors in Recognition of Materials in X-Ray Testing System Containing X-Ray Sandwich Detectors

V. A. Udod, S. P. Osipov and S. Yu. Nazarenko p. 46  abstract

---

Fluorescent Penetrant Inspection

Evaluating the Efficiency of Using Ultraviolet Radiation Sources in Carrying Out Fluorescent penetrant Testing

I. I. Kudinov, A. N. Golovkov, P. A. Shishkin, D. S. Skorobogatko, A. I. Andreev and A. S. Generalov p. 57  abstract

---