DIC Analysis of Impact Compression Test Using the Hopkinson Bar Method with HPV-X3

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User Benefits

- With a maximum frame rate of 20 Mfps, the HPV-X3 is well suited for observing high-speed phenomena such as impact tests. - The HPV-X3 offers three times the resolution of conventional models, enabling DIC analysis at much higher resolution.

Introduction

Understanding material properties is extremely important in product design. In particular, for applications such as transportation equipment, where materials may be subjected to impact loads, it is necessary to evaluate not only static properties but also impact properties. When subjected to impact, materials may exhibit stress-strain characteristics different from those under static loading, making it essential to clarify these characteristics through impact testing. Among available methods, the Hopkinson bar method is widely used for impact compression testing. This method, proposed by B. Hopkinson, enables detailed analysis of a material’s impact response and fracture behavior by applying a sudden force to the specimen using a bar-launching device. This paper presents an example in which the impact compression test of an aluminum specimen using the Hopkinson bar method was recorded with an HPV-X3 highspeed video camera, and DIC (Digital Image Correlation) analysis was performed.

March 17, 2026 GMT

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