Calibration of the low‐velocity impact experiments

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Апрель 5, 2025

Abstract Low‐velocity impact experiments are essential for evaluating the mechanical behavior and resistance of composite materials in engineering applications. These primarily based on measurement force‐time signal a few parameters, including energy, velocity, mass. All other such as displacement, absorbed subsequently derived from these fundamental inputs. This paper first investigates influence miscalibration force signals, highlighting its significant reliability calculated energy. Specifically, error 10% can result more than 20% maximum deflection over 40% Second, this study introduces novel calibration method principle that absorb negligible energy during low‐energy impacts below damage threshold. The proposed is validated using theoretical mass‐spring model, demonstrating effectiveness improving accuracy. Calibration enhances consistency values, reducing deviation by an average 6.45%, aligning force‐displacement curves with predictions. Additionally, procedure significantly reduces residual initial range 1.084–1.226 J to 0.013–0.030 J, yielding values reliable tests conducted at energies Hence, highlights importance proper provides robust framework achieving accurate consistent results. Highlights A new low‐velocity proposed. Incorrect affects accuracy displacement. ensures absorption estimates polymer composites. It reliability. approach improves repeatability experiments.

Язык: Английский

Compression after impact behavior of flat and tapered Single-Double carbon composite specimens

Composites Part C Open Access, Год журнала: 2025, Номер unknown, С. 100597 - 100597

Опубликована: Апрель 1, 2025

Язык: Английский