Ian Widi Perdana | Universiti Malaysia Perlis (UniMAP) (original) (raw)
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Papers by Ian Widi Perdana
In the last few decades, when travel makes one modest, people prefer air travel instead of car. A... more In the last few decades, when travel makes one modest, people prefer air travel instead of car. As such, aircrews and flight passengers are prone to electromagnetic (EM) radiation exposure overtime during flight. Various researches were conducted by the Federal Aviation Agency (FAA) and European Union (EU) in order to understand its details. This paper offers reviews of EM radiation effect to human body in altitude of commercial jet and materials that may provide a convince protection for fuselage structure of aircraft. It was found that Polyethylene (PE) is a convincing material that may absorb EM radiation. NASA has found that lower effective dose toward galactic cosmic rays (GCR) was obtained in PE at 0.1 cSv/day compared to aluminum at 0.125 cSv/day at the same thickness which was 20 g/cm 2 .
Thin film is denoting as a miniature circuit or device consisting of a thin layer of metal or sem... more Thin film is denoting as a miniature circuit or device consisting of a thin layer of metal or semiconductor on a ceramic or glass substrate. In this review article we raised MgO to be the object of observation due to MgO is one of the most frequently used materials in electronic device, which has the advantage of remaining chemically stable at the elevated temperatures at which thin layer may be grown. In its fabrication, MgO thin films can be prepared by using variety of techniques. Thermal deposition in vacuum by resistive heating, electron beam gun or laser beam gun evaporation is one of the major techniques.
Thesis Chapters by Ian Widi Perdana
As the era develops and the demand of the technology is compulsory, materials that been extracted... more As the era develops and the demand of the technology is compulsory, materials that been extracted from inside the earth is not enough to compensate it. Such as alloys, the demand of alloys that is capable to be used in extreme condition and environment is highly inclining nowadays. The usage of superalloys which is based form nickel and cobalt is one of the option for extreme environment. However, these alloys is unable to balance the growing technologies that have been developed due to they have very high weight and heavy in order to increase their strength.
In the last few decades, when travel makes one modest, people prefer air travel instead of car. A... more In the last few decades, when travel makes one modest, people prefer air travel instead of car. As such, aircrews and flight passengers are prone to electromagnetic (EM) radiation exposure overtime during flight. Various researches were conducted by the Federal Aviation Agency (FAA) and European Union (EU) in order to understand its details. This paper offers reviews of EM radiation effect to human body in altitude of commercial jet and materials that may provide a convince protection for fuselage structure of aircraft. It was found that Polyethylene (PE) is a convincing material that may absorb EM radiation. NASA has found that lower effective dose toward galactic cosmic rays (GCR) was obtained in PE at 0.1 cSv/day compared to aluminum at 0.125 cSv/day at the same thickness which was 20 g/cm 2 .
Thin film is denoting as a miniature circuit or device consisting of a thin layer of metal or sem... more Thin film is denoting as a miniature circuit or device consisting of a thin layer of metal or semiconductor on a ceramic or glass substrate. In this review article we raised MgO to be the object of observation due to MgO is one of the most frequently used materials in electronic device, which has the advantage of remaining chemically stable at the elevated temperatures at which thin layer may be grown. In its fabrication, MgO thin films can be prepared by using variety of techniques. Thermal deposition in vacuum by resistive heating, electron beam gun or laser beam gun evaporation is one of the major techniques.
As the era develops and the demand of the technology is compulsory, materials that been extracted... more As the era develops and the demand of the technology is compulsory, materials that been extracted from inside the earth is not enough to compensate it. Such as alloys, the demand of alloys that is capable to be used in extreme condition and environment is highly inclining nowadays. The usage of superalloys which is based form nickel and cobalt is one of the option for extreme environment. However, these alloys is unable to balance the growing technologies that have been developed due to they have very high weight and heavy in order to increase their strength.