Low frequency ultrasonic dataset for pulse echo object detection in an isotropic homogeneous medium as reference for heterogeneous materials in civil engineering

Stefan Maack; Stefan Küttenbaum; Benjamin Bühling; Ernst Niederleithinger

doi:10.1016/j.dib.2022.108235

Low frequency ultrasonic dataset for pulse echo object detection in an isotropic homogeneous medium as reference for heterogeneous materials in civil engineering

Data Brief. 2022 May 1:42:108235. doi: 10.1016/j.dib.2022.108235. eCollection 2022 Jun.

Authors

Stefan Maack¹, Stefan Küttenbaum¹, Benjamin Bühling¹, Ernst Niederleithinger¹

Affiliation

¹ Bundesanstalt für Materialforschung und Prüfung (BAM), , Unter den Eichen 87, Berlin 12205, Germany.

Abstract

The dataset presented contains ultrasonic data recorded in pulse echo mode. The investigated specimen is made of the isotropic homogeneous material polyamide and has a drill hole of constant diameter running parallel to the surface, which was scanned in a point grid using an automatic scanner system. At each measuring position, a pitch-catch measurement was performed using a sampling rate of 2 MHz. The probes used are arrays consisting of a spatially separated receiving and in-phase transmitting unit. The transmitting and receiving sides each consist of 12 point-shaped single probes. These dry-point contact (DPC) probes operate according to the piezoelectric principle at nominal frequencies of 55 kHz (shear waves) and 100 kHz (longitudinal waves), respectively, and do not require a coupling medium. The measurements are performed with longitudinal (100 kHz) and transverse (55 kHz) waves with different geometric orientations of the probe on the measurement surface. The data presented in the article provide a valid source for evaluating reconstruction algorithms for imaging in the low-frequency ultrasound range.

Keywords: Civil engineering; Non-destructive testing; Piezoelectric transducer; Pulse-echo method; Reconstruction algorithm; Reference material; Ultrasound; Validation.