Bionic bone sample for terahertz in-situ impact testing and preparation method thereof

Abstract

The invention relates to a bionic bone sample for terahertz in-situ impact testing and a preparation method thereof, and belongs to the field of biomechanical testing. The bionic bone sample consisting of bionic skins, muscles and bones is constructed with a outside-to-inside topological structure. The bionic bones with porous gradient characteristics are prepared; the bionic muscle with similar mechanical properties to the natural biological muscles is attached to the outer layer of the bionic bone, and the outer layer of the muscle is wrapped with artificial skin, so as to prepare the bionicbone sample simulating a whole biological limb structure. Membrane pressure sensors are embedded in various components of the bionic bone sample, thus implementing all-directional, multi-level and stereoscopic detection on the values of the impact force on the various components of the bionic bone sample. The bionic bone sample can replace the natural bone for impact performance experiments and can integrate a variety of new detection methods, so that an effective tool is provided for biomaterial impact performance testing, and a new study means is provided for the study on the impact failuremechanism of biomimetic material instruments including bionic limbs, implanted bionic bones and the like.

Description

technical field [0001] The invention relates to the field of biomechanical testing, in particular to a bionic bone sample and a preparation method for terahertz in situ impact testing. The invention can be used to simulate the mechanical properties of natural biological materials and replace them for impact tests under terahertz real-time in-situ detection, and provide a highly repeatable and mass-preparable multifunctional sample for impact performance tests of bionic material samples. It makes up for the shortcomings of large differences in structure and composition after natural bone is made into samples, reduces unnecessary experimental variables caused by differences in natural bone, and provides a standardization method with simple preparation and high repeatability of mechanical properties for natural bone impact performance testing. The sample also provides a new research method for testing the mechanical properties of materials such as bionic materials and medical bio...

AI Technical Summary

Problems solved by technology

[0004] The use of natural bone for impact performance testing mainly faces the following two problems: 1. The resources of natural bone for experiments are limited so that samples cannot be prepared in large quantities, and even some experimental materials (such as human bones) are difficult to obtain, resulting in poor repeatability of experiments and insufficient availability. The experimental data

2. The shape, microstructure, mechanical properties, and density of natural bones are quite different due to their different positions and functions. Differences in growth environment, eating habits, and health status will also lead to differences in bones, resulting in differences due to the samples themselves. Inherent mechanical and structural differences bring unnecessary variable factors and errors to the experiment, so that the experimental data cannot clearly reflect the impact performance of natural bone, which needs to be solved urgently

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