Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988403
M. Daraban, C. Corches, R. Fizesan, G. Chindris
It is not easy to debug real-time operating systems or communication interfaces on embedded systems. In the case of operating systems, the tasks will interact and compete for shared resources, resulting in changes in software behavior that are not visible from the source code. When it comes to protocol or interface debugging, alternatively, losing messages or user interactions can disrupt communication, causing the module to freeze. Debugging strategies, such as single stepping or break points should not be used because they will disrupt the system protocol message timings. The framework proposed in this paper provides a means to detect bugs or errors that might appear during task development or protocol communication for real-time operating systems.
{"title":"Real-Time Embedded Framework Debugger","authors":"M. Daraban, C. Corches, R. Fizesan, G. Chindris","doi":"10.1109/SIITME56728.2022.9988403","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988403","url":null,"abstract":"It is not easy to debug real-time operating systems or communication interfaces on embedded systems. In the case of operating systems, the tasks will interact and compete for shared resources, resulting in changes in software behavior that are not visible from the source code. When it comes to protocol or interface debugging, alternatively, losing messages or user interactions can disrupt communication, causing the module to freeze. Debugging strategies, such as single stepping or break points should not be used because they will disrupt the system protocol message timings. The framework proposed in this paper provides a means to detect bugs or errors that might appear during task development or protocol communication for real-time operating systems.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126472928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988074
D. Visan, A. Lita
In this paper is presented the design and the implementation of a benchmark system that is intended to be used in industrial applications where is necessary to analyze, test and validate the correct operation of low-power AC motors. The core element of the proposed system is represented by the USB-6000 multifunctional data acquisition module that is connected to a PC running a dedicated software application written in Lab VIEW. The relevant electrical and mechanical parameters of the tested AC motor are measured using a set of sensors for speed, voltage, current and vibrations. The initial conditioning and galvanic insulation of the signals acquired from sensors are realized with a separate digital input/digital output module. Although, in the proposed implementation, the benchmark system is specialized only on low-power AC motors, it can be easily adapted to operate with other types of electrical motors. By integrating the capabilities offered by the virtual instrumentation tools, corelated with the performances of the compact USB-6000 data acquisition module, a highly efficient, reliable and low-cost implementation of an AC motors testing system has resulted.
{"title":"Virtual Instrumentation Based Benchmark System for AC Motors Testing","authors":"D. Visan, A. Lita","doi":"10.1109/SIITME56728.2022.9988074","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988074","url":null,"abstract":"In this paper is presented the design and the implementation of a benchmark system that is intended to be used in industrial applications where is necessary to analyze, test and validate the correct operation of low-power AC motors. The core element of the proposed system is represented by the USB-6000 multifunctional data acquisition module that is connected to a PC running a dedicated software application written in Lab VIEW. The relevant electrical and mechanical parameters of the tested AC motor are measured using a set of sensors for speed, voltage, current and vibrations. The initial conditioning and galvanic insulation of the signals acquired from sensors are realized with a separate digital input/digital output module. Although, in the proposed implementation, the benchmark system is specialized only on low-power AC motors, it can be easily adapted to operate with other types of electrical motors. By integrating the capabilities offered by the virtual instrumentation tools, corelated with the performances of the compact USB-6000 data acquisition module, a highly efficient, reliable and low-cost implementation of an AC motors testing system has resulted.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133974213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988087
Loredana-Maria Burciu, Radu-Petru Fotescu, R. Constantinescu, P. Svasta, Madalin Moise
At present, no matter what direction we look at or what activities we carry out, we find that we are surrounded by IoT systems. This domain has developed a lot in the last period and continues to develop in the future. These systems communicate with each other and all specialists try to improve these methods of communication through different methods and modules. These wireless communication modules used in the IoT field differ in many ways, even in terms of operating frequency, transmission distance, or useful signal detection using a recognition key between transmitter and receiver. This paper analyzes two wireless communication modules, one that communicates in 433MHz and one that communicates in 2.4 GHz and will analyze their operation using a real-time spectrum analyzer. For a more detailed analysis of these operating methods, the spectrum for the 433MHz and 2.4 GHz frequencies was analyzed with both the Spike software tool (using the Signal Hound BB60C receiver) and the portable spectrum analyzer PR100 from Rohde & Schwarz.
{"title":"Analysis of Different Types of Wireless Communication Modules With a Real-Time Spectrum Analyzers","authors":"Loredana-Maria Burciu, Radu-Petru Fotescu, R. Constantinescu, P. Svasta, Madalin Moise","doi":"10.1109/SIITME56728.2022.9988087","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988087","url":null,"abstract":"At present, no matter what direction we look at or what activities we carry out, we find that we are surrounded by IoT systems. This domain has developed a lot in the last period and continues to develop in the future. These systems communicate with each other and all specialists try to improve these methods of communication through different methods and modules. These wireless communication modules used in the IoT field differ in many ways, even in terms of operating frequency, transmission distance, or useful signal detection using a recognition key between transmitter and receiver. This paper analyzes two wireless communication modules, one that communicates in 433MHz and one that communicates in 2.4 GHz and will analyze their operation using a real-time spectrum analyzer. For a more detailed analysis of these operating methods, the spectrum for the 433MHz and 2.4 GHz frequencies was analyzed with both the Spike software tool (using the Signal Hound BB60C receiver) and the portable spectrum analyzer PR100 from Rohde & Schwarz.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125707746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988687
L. Perisoara, I. Bacîș, Alexandru Vasile
The interest of companies of using unconventional energies (solar, wind, waves, hydroelectric, cattle etc.) has been accelerated in the current conditions of the energy crisis. The solar energy is the easiest one to be converted into electricity, which can be further used to generate mechanical work. In the automotive field, the Solar Electric Vehicles (SEVs) are in fact usual Electric Vehicles (EVs) for which the high-voltage battery pack used for traction is charged using a lot of photovoltaic (PV) cells mounted on the vehicle. The paper presents the experiments performed with non-polluting energy in the Automotive Green Technologies Laboratory within the CAMPUS Research Institute. A mobile testing platform was developed by installing two semi-flexible Photovoltaic (PV) panels on the roof of a medium capacity passenger vehicle available in laboratory, Dacia Logan 2. To charge a 12V battery, a single panel or two panels connected in parallel for higher currents are used. For a 24V battery two panels connected in series are used. The tested batteries were Lead-Acid and LiFePO4 chemistries. The performed measurements during charging enable us to derive the efficiency of the entire PV system. Finally, the block architecture for the Logan Solar Electric Vehicle (SEV) is proposed and the PV system requirements are derived.
{"title":"Platform for researching the conversion efficiency of solar energy into electricity for vehicles","authors":"L. Perisoara, I. Bacîș, Alexandru Vasile","doi":"10.1109/SIITME56728.2022.9988687","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988687","url":null,"abstract":"The interest of companies of using unconventional energies (solar, wind, waves, hydroelectric, cattle etc.) has been accelerated in the current conditions of the energy crisis. The solar energy is the easiest one to be converted into electricity, which can be further used to generate mechanical work. In the automotive field, the Solar Electric Vehicles (SEVs) are in fact usual Electric Vehicles (EVs) for which the high-voltage battery pack used for traction is charged using a lot of photovoltaic (PV) cells mounted on the vehicle. The paper presents the experiments performed with non-polluting energy in the Automotive Green Technologies Laboratory within the CAMPUS Research Institute. A mobile testing platform was developed by installing two semi-flexible Photovoltaic (PV) panels on the roof of a medium capacity passenger vehicle available in laboratory, Dacia Logan 2. To charge a 12V battery, a single panel or two panels connected in parallel for higher currents are used. For a 24V battery two panels connected in series are used. The tested batteries were Lead-Acid and LiFePO4 chemistries. The performed measurements during charging enable us to derive the efficiency of the entire PV system. Finally, the block architecture for the Logan Solar Electric Vehicle (SEV) is proposed and the PV system requirements are derived.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123722540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988109
Nistor Nicusor, L. Baicu, B. Dumitrascu
The design and implementation of a way to transmit electromagnetic energy using electromagnetic waves is presented in this paper. Preliminary studies were conducted at low frequency and proved the fact that low frequency alternative electrical energy can be transmitted by using magnetically coupled coils that are placed at a close distance to each other, with high energy efficiency when the alignment, parallelism, and the gap between coils is set properly. Simulation and theoretical studies regarding the physical quantity involved in energy transfer, were conducted. The experiments were conducted using laboratory equipment, microwave generating circuits and directional antennas. Experimental data obtained are presented in graphs, while considering magnetic field. Because this subject is very important for wireless charging and the distance considered during the experiments is in the order of tens of centimetres, we propose the development of our idea for industrial applications. In the end, this paper proposes an optimisation model for wireless energy transmission between two devices, considering the case where the coupling is not constant between the two coils that form the transformer, by tuning the impedance of the electronic circuit from the secondary coil. The hypothesis for optimising the efficiency of the energy transfer in open transformers with variable coupling factor is verified in this paper using several simulations performed in LTSpice. The simulations show that the mutual inductance of some coils, which influences the efficiency of electromagnetic transmission, and the impedance and frequency characteristics of the secondary circuit are closely related. The entire optimisation process is performed using a PID regulator using an eight-bit microcontroller.
{"title":"Microcontroller assisted wireless energy transmission","authors":"Nistor Nicusor, L. Baicu, B. Dumitrascu","doi":"10.1109/SIITME56728.2022.9988109","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988109","url":null,"abstract":"The design and implementation of a way to transmit electromagnetic energy using electromagnetic waves is presented in this paper. Preliminary studies were conducted at low frequency and proved the fact that low frequency alternative electrical energy can be transmitted by using magnetically coupled coils that are placed at a close distance to each other, with high energy efficiency when the alignment, parallelism, and the gap between coils is set properly. Simulation and theoretical studies regarding the physical quantity involved in energy transfer, were conducted. The experiments were conducted using laboratory equipment, microwave generating circuits and directional antennas. Experimental data obtained are presented in graphs, while considering magnetic field. Because this subject is very important for wireless charging and the distance considered during the experiments is in the order of tens of centimetres, we propose the development of our idea for industrial applications. In the end, this paper proposes an optimisation model for wireless energy transmission between two devices, considering the case where the coupling is not constant between the two coils that form the transformer, by tuning the impedance of the electronic circuit from the secondary coil. The hypothesis for optimising the efficiency of the energy transfer in open transformers with variable coupling factor is verified in this paper using several simulations performed in LTSpice. The simulations show that the mutual inductance of some coils, which influences the efficiency of electromagnetic transmission, and the impedance and frequency characteristics of the secondary circuit are closely related. The entire optimisation process is performed using a PID regulator using an eight-bit microcontroller.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121356270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988172
R. Bozomitu, Ş. C. Stoica
In this paper a robust radiocommunication system for FM transmission based on software defined radio technology is presented. The hardware component of the radio-transmitter (TX) and the radio-receiver (RX) are implemented by using Universal Software Radio Peripheral (USRP) devices. The proposed radiocommunication system is used for FM broadcasting and is able to transmit data with differentially-encoded BPSK (DEBPSK) modulation in FM signal by using subsidiary communication channel on a 76 kHz subcarrier. The software component of the TX and RX devices are implemented in Matlab/Simulink and are customized for different data rates between 1187.5 b/s to 9500 b/s. The radiocommunication system is tested by simulation, using an AWGN type communication channel, and also by using an experimental setup. The bit error rate depending on Eb/N0 ratio for different transmission scenarios is plotted.
{"title":"A Robust Radiocommunication System for FM Transmission Based on Software Defined Radio Technology","authors":"R. Bozomitu, Ş. C. Stoica","doi":"10.1109/SIITME56728.2022.9988172","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988172","url":null,"abstract":"In this paper a robust radiocommunication system for FM transmission based on software defined radio technology is presented. The hardware component of the radio-transmitter (TX) and the radio-receiver (RX) are implemented by using Universal Software Radio Peripheral (USRP) devices. The proposed radiocommunication system is used for FM broadcasting and is able to transmit data with differentially-encoded BPSK (DEBPSK) modulation in FM signal by using subsidiary communication channel on a 76 kHz subcarrier. The software component of the TX and RX devices are implemented in Matlab/Simulink and are customized for different data rates between 1187.5 b/s to 9500 b/s. The radiocommunication system is tested by simulation, using an AWGN type communication channel, and also by using an experimental setup. The bit error rate depending on Eb/N0 ratio for different transmission scenarios is plotted.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117187454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9987751
Teodor-Octavian Păcurar, A. Silaghi, Catalin Balan, A. De Sabata, Cornel Balint
In this paper, we present a study regarding configuration setup used inside a semi-anechoic chamber, from an EMC Laboratory facility. Comparisons are made at the Near Field Communication (NFC) frequency band of an automotive Device Under Test (DUT) tested at 13.56 MHz, between results obtained with different configurations and different antenna types: monopole antenna and loop antenna.
{"title":"Study Regarding the Configuration Setup used inside an EMC Laboratory for NFC Communication Measurement","authors":"Teodor-Octavian Păcurar, A. Silaghi, Catalin Balan, A. De Sabata, Cornel Balint","doi":"10.1109/SIITME56728.2022.9987751","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9987751","url":null,"abstract":"In this paper, we present a study regarding configuration setup used inside a semi-anechoic chamber, from an EMC Laboratory facility. Comparisons are made at the Near Field Communication (NFC) frequency band of an automotive Device Under Test (DUT) tested at 13.56 MHz, between results obtained with different configurations and different antenna types: monopole antenna and loop antenna.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126032230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988325
B. Dumitrascu, D. Aiordachioaie
Data preprocessing is emphasized, as a major step to generate features for data analysis and classification. Data preprocessing is on the feedback loop of data analysis and is driven by experimented users with valuable software tools. In this work, data preprocessing is extended with decorrelation capacity, based on matched data transforms, e.g., discrete cosine transforms. The context is fixed by the availability of power spectra, as input to the classification stage. The preprocessing structure is evaluated with physical recorded signals, representing vibrations generated by faults in the bearings of rotating machines. The structure of the preprocessing is general and can be applied in many other paradigms as machine learning, for the generation of the training sets with independent features.
{"title":"On Data Preprocessing for an Improved Performance of the Sources Classification","authors":"B. Dumitrascu, D. Aiordachioaie","doi":"10.1109/SIITME56728.2022.9988325","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988325","url":null,"abstract":"Data preprocessing is emphasized, as a major step to generate features for data analysis and classification. Data preprocessing is on the feedback loop of data analysis and is driven by experimented users with valuable software tools. In this work, data preprocessing is extended with decorrelation capacity, based on matched data transforms, e.g., discrete cosine transforms. The context is fixed by the availability of power spectra, as input to the classification stage. The preprocessing structure is evaluated with physical recorded signals, representing vibrations generated by faults in the bearings of rotating machines. The structure of the preprocessing is general and can be applied in many other paradigms as machine learning, for the generation of the training sets with independent features.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125814160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988041
Nicolae Ioan Gross, P. Svasta
In modern passenger and commercial vehicles, level sensing of various fluids used in the automotive industry is directly linked to different safety features of electric/electronic (E/E) systems. The most common liquids are engine and transmission oils, fuel, brake fluid, washer fluid (for windscreen and headlamps), engine coolant liquid. The main factors which influence the decision of using a specific fluid level sensing technique and sensor material are the different physical and chemical properties of the interacting components, the environmental factors, and the purpose of measurement. Our research is focused on measurement methods for automotive fluid level sensing according to some of the various liquid types used in a vehicle, and a comparative analyzis between selection criteria for fluid level sensing solution. Constraints between liquid type and level sensors are presented, as well
{"title":"Current Implementations of Fluid Level Sensors from an Automotive Safety Perspective","authors":"Nicolae Ioan Gross, P. Svasta","doi":"10.1109/SIITME56728.2022.9988041","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988041","url":null,"abstract":"In modern passenger and commercial vehicles, level sensing of various fluids used in the automotive industry is directly linked to different safety features of electric/electronic (E/E) systems. The most common liquids are engine and transmission oils, fuel, brake fluid, washer fluid (for windscreen and headlamps), engine coolant liquid. The main factors which influence the decision of using a specific fluid level sensing technique and sensor material are the different physical and chemical properties of the interacting components, the environmental factors, and the purpose of measurement. Our research is focused on measurement methods for automotive fluid level sensing according to some of the various liquid types used in a vehicle, and a comparative analyzis between selection criteria for fluid level sensing solution. Constraints between liquid type and level sensors are presented, as well","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122011256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9987864
F. Baciu, M. Branzei, B. Mihailescu, G. Vărzaru
An innovative method for manufacturing solderless assembly for electronics eliminates the need for the laminated printed circuit board, but uses new materials in an additive manner to obtain fully encapsulated electronic modules. To characterize the reliability of such a module, data for material properties are needed, some of which (Poisson's ratio, Young's module) are not found in the datasheets. They are necessary for calculating the natural resonance frequency of plates made by these materials. The paper presents the determination of the parameters using the Digital Image Correlation method. Two epoxy system materials were studied: Epoxylite 235SG, and MC62/W363. The determined Poisson's ratio values (0.37, respectively 0.32) fall within the general range confirmed by other measurements for this type of material. For Young's module only one reference was found, for Epoxylite 235SG: the determined value (2624.40 MPa) is close to that resulting from the graph of its variation with temperature at 298.15K (2500 MPa), this value being obtained by a Dynamic-Mechanical Analysis method carried out by the Elantas' Research & Development Laboratory from Parma.
{"title":"Measurement of some properties for material qualification in solderless assembly for electronics","authors":"F. Baciu, M. Branzei, B. Mihailescu, G. Vărzaru","doi":"10.1109/SIITME56728.2022.9987864","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9987864","url":null,"abstract":"An innovative method for manufacturing solderless assembly for electronics eliminates the need for the laminated printed circuit board, but uses new materials in an additive manner to obtain fully encapsulated electronic modules. To characterize the reliability of such a module, data for material properties are needed, some of which (Poisson's ratio, Young's module) are not found in the datasheets. They are necessary for calculating the natural resonance frequency of plates made by these materials. The paper presents the determination of the parameters using the Digital Image Correlation method. Two epoxy system materials were studied: Epoxylite 235SG, and MC62/W363. The determined Poisson's ratio values (0.37, respectively 0.32) fall within the general range confirmed by other measurements for this type of material. For Young's module only one reference was found, for Epoxylite 235SG: the determined value (2624.40 MPa) is close to that resulting from the graph of its variation with temperature at 298.15K (2500 MPa), this value being obtained by a Dynamic-Mechanical Analysis method carried out by the Elantas' Research & Development Laboratory from Parma.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114071947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：