Cultural relics are relics and relics of historical, artistic and scientific value left by human beings in social activities. They are records created by or related to human activity, and they are part of history that can never be replaced or recreated. They carry the reverence of the ancestors for the natural world, the exploration of the unknown of the world, and the precipitation of human civilization in the long river of thousands of years of history. They belong not only to the past, but also to the present, but also to our future generations.
At this stage, in order to maximize the life of cultural relics, cultural relics experts have invested a lot of energy in the use of modern means to carry out cultural relics protection research.
The protection of cultural relics is generally divided into two major processes: cultural relics appraisal and testing and cultural relics restoration.
In view of the non-reproducibility of cultural relics, the general identification and testing of cultural relics mostly uses nondestructive testing technology, such as the use of isotopes, light release, thermal light release and other technologies for chronological identification of cultural relics; the use of CT tomography and imaging technology (X-ray CT, radar imaging, ultrasonic flaw detection, etc.) to conduct nondestructive detection of the internal structure and defects of cultural relics; the use of ultrasonic pulse methods to assess and identify the degree of weathering of old stone cultural relics.
The restoration of cultural relics involves a wide range of aspects, and generally needs to go through multiple technical processes such as spectral analysis, drawing, bonding, reinforcement, replenishment, and gold leaf re-pasting. It not only requires the restorer to master a wealth of knowledge of history, chemistry, physics, aesthetics, materials and materials, but also requires a fixed foundation in painting and writing.
At the same time, the restorer also needs to have super patience, a high sense of responsibility and strong perseverance. In the restoration of cultural relics, a little carelessness, the failure of cultural relics restoration surgery will directly lead to the recovery of this historical record, which will bring immeasurable losses to the cultural relics protection work.
On April 28, 2022, the online live broadcast event launched by Patrol Eagle Intelligent Inspection will introduce the main detection technologies involved in the weathering of stone materials, stone statues/stele forests/ancient buildings, and defect detection.
Ultrasonic pulse method to assess the degree of stone weathering - after the stone weathering, the presence of loose and fissures in the structure between the crystals will reduce the propagation speed of ultrasonic waves inside the stone, which will reduce the amplitude of the first wave of the receiving wave, and also make the waveform of the receiving wave distorted, and the direct reaction is to disperse the spectrum of the receiving wave.
Using the correlation between rock and ultrasonic wave velocity and first wave amplitude, the analysis of ultrasonic wave velocity, first wave amplitude and receiving wave spectrum can scientifically evaluate the degree of weathering of stone, the direction and location of internal fractures, so as to obtain information about stone weathering. This technology is an important means to explore and evaluate the internal development of stone crevices in recent years.
Ultrasonic, radar CT tomography and imaging technology for stone statues, ancient building structures, defect assessment - internal fracture development is the most destructive disease type that threatens the long-term preservation of stone art treasures, to understand the development of stone carvings, especially its development inside stone carvings, for the study and formulation of stone carvings protection measures have great guiding significance and reference value. The defects of columns, girders and bucket arches in ancient Chinese architecture have become the main factors that seriously endanger the safety of ancient buildings.
In recent years, with the development of ultrasonic array technology, SAFT synthetic aperture imaging technology and radar SFCW step broadband technology and TOF time-of-flight technology, this type of equipment is becoming more and more portable, simplified, low-power consumption and other characteristics, which helps us to conduct rapid, high-precision, nondestructive testing, analysis and evaluation of structural defects of cultural relics on the spot, greatly improving the detection efficiency and professional ability of cultural relics experts, and has become a test and evaluation of stone carvings. An indispensable tool in the assessment of diseases in ancient building structures.
This live event
Patrol Eagle Intelligence Inspection is specially invited
Shaanxi Provincial Institute of Cultural Relics Protection
Researcher Ma Honglin
Stream details
Time
28 April at 14:00
Content
Nondestructive testing technology sharing of cultural relics protection
Ma Honglin
Graduated from Xi'an Jiaotong University majoring in Biomedical Engineering and Instrumentation. He is a member of the Analysis and Testing Professional Committee of the China Cultural Relics Protection Technology Association and a member of the Shaanxi Provincial Cultural Relics Appraisal Committee. He has participated in many international projects such as "Sino-Italian Cooperation in the Construction of Xi'an Cultural Relics Protection and Restoration Center" and Sino-Japanese cooperation "Tangling Stone Carvings Protection Project", and presided over the completion of two scientific research projects of the State Administration of Cultural Heritage, "Tangling Stone Carving Ultrasonic Tomography Research", "Ultrasonic Tomography Of Cultural Relics Multiporous Materials", and the compilation of the industry standard "Technical Regulations for the Assessment of Movable Cultural Relics Diseases - Stone Cultural Relics", and has made great achievements in the field of cultural relics restoration technology.
During the live broadcast
In addition to the rich cultural relics non-destructive testing case sharing
A question-and-answer session was also set up
We look forward to working with you online
April 28th, we look forward to it together!
About the Eagle Patrol
Formed by the merger of Dreamlab in Singapore and Proceq in Switzerland, its mission is to build the world through software, sensors and data protection. Eagle Inspection's full-stack inspection solutions integrate intuitive, easy-to-use software and powerful, portable sensors to provide reliable data for building and fixed asset maintenance decisions.
Based on intelligent and automatic detection and data-driven, Patrol Eagle Intelligent Inspection is rapidly moving towards the goal of building health preventive maintenance, with a view to realizing the vision of extending the service life of assets and improving the long-term value of assets for the majority of owners.
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This article only represents the views of the author and does not represent the position of the literary circle