FBG Sensing Technology for the Temperature and Strain Monitoring of Cement Solidification Process

The use of fiber grating sensing technology has grown significantly in recent years, due to its high precision and accuracy in measuring physical parameters such as temperature and strain. In scientific research, it has become an essential tool for monitoring various material properties under extreme conditions. In this article, we will discuss the problems that fiber grating sensing technology can solve, and how Beijing Dacheng Yongsheng Technology Co., Ltd.(short for DCYS ) can support the temperature and strain monitoring of cement solidification process .

Fiber Bragg Grating Sensing Principle:

Fiber Bragg gratings (FBGs) are periodic structures that are inscribed in the core of an optical fiber. These structures reflect a specific wavelength of light that is determined by the periodicity of the grating. When the grating is subjected to mechanical or thermal strain, the reflected wavelength changes in a predictable manner. By monitoring the reflected wavelength, changes in strain, temperature, and other parameters can be detected. FBG sensors can be used to monitor a wide range of parameters, including strain, stress, temperature, and vibration.

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Fiber Bragg Grating Sensing Principle - FBG Principle - FBG Sensor Principle - FBG Temperature Strain Stress Vibration Shape Sensing Principle

Analysis of Demand for Temperature and Strain Monitoring of Cement Solidification Process:

In the field of scientific research, the cement solidification process is of significant interest, as it involves complex chemical and physical reactions. Accurate temperature and strain monitoring during the cement solidification process can help optimize the process and improve the quality of the final product. For example, by monitoring the temperature and strain, researchers can gain insight into the hydration process, which can affect the strength and durability of the cement.

Physical Diagram of OFSCN® 300°C Capillary Seamless Steel Tube FBG Temperature Sensor(01 type, single-ended)

Why Measuring the Strain, Temperature, and Other Aspects of the Cement Solidification Process is Needed:

Measuring the temperature and strain during the cement solidification process provides valuable information that can help optimize the process and improve the quality of the final product. The hydration process of cement is exothermic, meaning that it releases heat. The rate of heat release affects the rate of hydration, which in turn affects the strength and durability of the cement. By monitoring the temperature and strain, researchers can gain insight into the hydration process and adjust the process accordingly to achieve the desired properties.

Physical Diagram of OFSCN® 300°C Capillary Seamless Steel Tube FBG Temperature Sensor(01 type)

Difficulties in Monitoring the Temperature and Strain of the Cement Solidification Process:

Monitoring the temperature and strain during the cement solidification process presents several challenges. The high temperatures and harsh chemical environment can cause conventional sensors to degrade or fail. The conventional sensors may also interfere with the hydration process, leading to inaccurate measurements. Additionally, the cement solidification process can occur over an extended period, making continuous and reliable monitoring challenging.

Physical Diagram of FC Fiber Connector for OFSCN® 300°C Capillary Seamless Steel Tube FBG Temperature Sensor(01 type, single-ended)

What Problems can be Solved by FBG Sensing Technology:

Fiber grating sensing technology offers several advantages over conventional sensing methods. The fiber optic sensors are immune to electromagnetic interference, making them suitable for use in harsh environments. They are also small in size and can be embedded in the cement mixture without affecting the hydration process. Furthermore, fiber grating sensing technology can provide continuous and accurate monitoring of temperature and strain over an extended period.

Recommended fiber grating temperature sensors:

800°C Femtosecond Fiber Bragg Grating Temperature Sensor - Single-Point/Multipoint FBG Thermometer - FBG Temperature Sensors

300°C Fiber Bragg Grating Temperature Sensor - Single-Point/Multipoint FBG Thermometer - FBG Temperature Sensors

150℃ Low-Voltage Insulated Fiber Bragg Grating Temperature Sensor - Single-Point/Multipoint FBG Thermometer

100°C Fiber Bragg Grating Temperature Sensor - Single-Point/Multipoint FBG Thermometer - FBG Temperature Sensors

500°C Femtosecond Fiber Bragg Grating Temperature Sensor - Single-Point/Multipoint FBG Thermometer - FBG Temperature Sensors

Ceramic Packaged Fiber Bragg Grating Temperature Sensor - Single/Multipoint FBG Thermometer - Insulating properties

Recommended fiber grating strain sensors:

6000με Fiber Bragg Grating Strain Sensor - FBG Strain Gauge - polymer material packaging - metal protection strain sensor - range 6000με/8000με

This product is a high-range fiber bragg grating strain sensor (FBG strain gauge) used for strain measurement. It can be used in a single-ended structure, where it is inserted into the object to be measured for strain measurement. It can also be used in a double-ended structure, where it is fixed with a fixture or bonded directly to the surface for strain measurement, enabling multi-point strain measurement when connected in series. The structure of this product is the same as that of fiber bragg grating stress sensors.

Product Overview:

The OFSCN® high-range fiber bragg grating strain sensor (FBG strain gauge) consists of fiber connectors (FC, SC, LC, ST, etc.), high elastic materials, and single-point FBG encapsulation. Depending on the materials used, it can work at room temperature or a maximum high temperature of 120 degrees Celsius (customizable upon request).

This product is characterized by its small size, light weight, high tensile and compressive strength, waterproof and moisture-proof properties, and full sealing. By utilizing the strain characteristics of FBG, this sensor can be inserted, welded, bonded, or adhered to the internal or surface of the test structure for strain detection and monitoring.

2500με Fiber Bragg Grating Strain Sensor - FBG Strain Gauge - Metal Encapsulation - High Temperature FBG Strain Sensor

The product is a fiber Bragg grating strain sensor (FBG strain gauge) encapsulated in seamless steel tube, used for strain measurement. In most cases, it is a single-point single-ended structure, or it can be produced as a multi-point single-ended structure. In a few cases, it can also be a double-ended structure. The deployment method of the product depends on the supporting fixtures, which can be directly inserted into the test object, or installed by surface welding with corresponding fixtures, bolted with drilled holes for fixation, adhesive surface mounting, tied with straps for fixation, or fixed with clamps, among various installation methods. This product is a basic structural product, which can be calibrated as a FBG displacement sensor, or used as a FBG stress sensor.

Product Summary:

The OFSCN® Capillary Seamless Steel Tube Fiber Bragg Grating Strain Sensor (FBG strain gauge) is composed of fiber optic connectors (FC, SC, LC, ST, etc.), stainless steel seamless tubes, and single-point FBG encapsulation.

It can also be customized as a high-temperature resistant fiber Bragg grating strain sensor.

This product features a small size, lightweight, high tensile and compressive strength, waterproof, moisture-proof, and fully sealed characteristics. By utilizing the strain characteristics of the FBG, this sensor can be inserted, clamped, surface-mounted, glued, or embedded into the measured structure to perform strain detection and monitoring.

Beijing Dacheng Yongsheng Technology Co., Ltd.:

Beijing Dacheng Yongsheng Technology Co., Ltd.(short for DCYS) is a professional manufacturer of fiber grating sensors, fiber grating demodulators and system software. Specializing in the production of various fiber grating sensors, including temperature, strain, stress, displacement, vibration, shape sensors, etc. DCYS also produces fiber grating demodulators, and can customize and develop related application software.

Recommended fiber grating demodulator:

Fiber Bragg Grating Interrogator - Fiber Optic Grating Demodulator - High-Speed/Frequency FBG Analyzer

This product is produced by DCYS, and it is a high-speed high-frequency fiber Bragg grating demodulator(Interrogator). The fiber grating demodulator is compatible with various specifications and models of OFSCN® fiber bragg grating sensors (temperature, strain, stress FBG sensors, etc.). It features adjustable port density (4, 8, 12, 16 channels) and high-speed high-refresh rate capabilities.

DCYS Helps to Monitor the Temperature and Strain of Cement Solidification Process:

DCYS can provide customized fiber grating sensors for temperature and strain monitoring of the cement solidification process. The sensors are non-invasive and can be easily installed on the surface of the concrete structure, making them suitable for real-time monitoring. Moreover, fiber grating sensors are highly sensitive and can detect small changes in temperature and strain, providing accurate and reliable data for scientific research.

DCYS can also provide fiber grating demodulators, which are used to convert the optical signal from the fiber grating sensor into an electrical signal that can be recorded and analyzed. The demodulators have high accuracy and resolution and can provide real-time data for scientific research.

In addition to the hardware, DCYS can also provide customized software solutions for data analysis and visualization. The software can process and analyze the data collected by the fiber grating sensors and provide insights into the cement solidification process, enabling researchers to optimize the process and improve the quality and safety of the concrete structure.

大成永盛光纤光栅传感监测系统框图

Other Points Need to Be Clarified:

In conclusion, fiber grating sensing technology is an effective tool for scientific research in temperature and strain monitoring of the cement solidification process. With the help of Beijing Dacheng Yongsheng Technology Co., Ltd., researchers can achieve real-time and accurate monitoring of the cement solidification process, providing insights into the process and improving the quality and safety of the concrete structure.

 

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