Louis Bucciarelli

Louis Bucciarelli
Massachusetts Institute of Technology | MIT · Department of Civil and Environmental Engineering

About

74
Publications
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Introduction
Skills and Expertise

Publications

Publications (74)
Article
We describe a plan to research and explore opportunities to establish an undergraduate, pre-professional degree program –Bachelor of Arts in Liberal Studies in Engineering – meant to attract students undecided about the choice of a major but who have sufficient interest to enroll in a program that keeps open the possibility that they might pursue a...
Article
Full-text available
Discussions about reform in engineering education have mainly centered on issues of curriculum and didactics but these discussions rarely address fundamental questions about the nature and character of knowledge and learning. This neglect has led the discussions down the wrong track and failed to critique implicit and inadequate conceptions of know...
Data
Full-text available
of some of the general societal effects of air and space technology in terms of attitude shifts and cultural impacts, with Dr. Louis Bucciarelli, National Air and Space Museum. James D. Maloney, George Washington University. Study to determine which future energy source developed from the space program would be best investment for future payoff in...
Article
Full-text available
The American writer H.L. Mencken (1880-1956) wrote that "there is always a well-known solution to every human problem-neat, plausible, and wrong." (Prejudices: Second Series, 1920) There is no simple solution to the rote-learning and cramming techniques used by students to obtain the entrance points for Irish third-level education. There are option...
Article
This chapter aims to present a systematic overview of the different kinds of rationality issues that may come up with regard to engineering-design practice. Engineering design has many faces, ranging from the almost exclusively functionally oriented design of new materials and technical devices in fields like mechanical and electrical engineering,...
Article
Full-text available
This research is concerned with describing the experience of being a designer and doing design. Many case studies have described individual experiences, both of designers reflecting on their own work, and academic studies of expert design work as performed in a professional context. Such studies are an important component of design research, and pr...
Article
The texts (and talk) of engineers take different forms. In this essay, I present and critique several texts written for different purposes and audiences but all intended to convey to the reader the technical details of whatever they are about - whether a textbook passage describing the fundamental behavior of an electrical component, a journal arti...
Chapter
engineering science;“Engineering science” referring to body of knowledge or the activity which generates that body of knowledge;Engineering science as knowledge codified in textbooks in engineering – courses in thermodynamics;How is engineering science, as a body of knowledge and/or research activity, different from ordinary science?;interplay of s...
Article
A proposal submitted to the d'Arbeloff Fund for Excellence in Education, MIT, Fall, 2008. A proposal to provoke discussion of possibilities for the establishment of a Bachelor of Arts in Engineering at MIT.
Article
A presentation made at a Workshop on Philosophy and Engineering, Technical University of Delft, October 2007. A much shorter version of this paper has been submitted for consideration in the EUROPEAN JOURNAL OF ENGINEERING EDUCATION  2008 Société Européenne pour la Formation des Ingénieurs (SEFI); EUROPEAN JOURNAL OF ENGINEERING EDUCATION ABET rec...
Article
An essential difficulty in solving practical problems that are not like the ones a student has solved before is discerning the core of the problem. It is claimed that discernment has to be trained by variation—by varying the context of the assignments in which students have to identify and grasp their “underlying form”. A decisive challenge in engi...
Article
Full-text available
A recent exploratory study examines design processes across domains and compares them. This is achieved through a series of interdisciplinary, participative workshops. A systematic framework is used to collect data from expert witnesses who are practising designers across domains from engineering through architecture to product design and fashion,...
Article
Full-text available
Design processes involve risk: to life and limb if the product is unsafe, to the financial health of the company if the product is late, unsuccessful or simply the wrong product, as well as to the emotions and careers of the designers. Many of the risks are shared universally by all designers, but each different industry and each different project...
Article
Rationality has different meanings within different contexts. In engineering design, to be rational usually means to be instrumentally rational, that is, to take a measured decision aimed at the realization of a particular goal, as in attempts to optimize an objective function. But in many engineering design problems, especially those that involve...
Article
Two ideologies about engineering, one claimed the habit of engineering design practitioners, the other that of engineering educators, are advanced. The two are incompatible. The disjunction is elaborated in terms of two distinct postulates and their consequences. A remedy for educators is recommended and the experiences of the author in attempting...
Chapter
My subject is error, failure, mis-step and/or the “incorrect” in the history of science, in particular in the history of mechanics. Focusing on the works of Clifford Truesdell, The Rational Mechanics of Flexible or Elastic Bodies 1638-1788, and of Edoardo Benvenuto, An Introduction to the History of Structural Mechanics, I explore how historians co...
Article
If one accepts that engineering design is the business of a collective or team and that different participants, with different competencies, responsibilities and interest ‘see’ the object of design differently, then the question arises: how do they harmonize their claims and proposals throughout the course of design? For that matter, how does any o...
Chapter
This chapter illustrates how the context of the engineering classroom might be transformed to better accord with the context of engineering practice through the introduction of open-ended, design-type exercises. While faculty can energize students with talk of creativity, and engage them in the act itself, the subject matter is considered “soft” an...
Article
In May, 1999, the NSF funded, Engineering Coalition of Schools for Excellence in Education and Leadership, (ECSEL) sponsored a workshop at MIT to: (i) describe and disseminate the principal results of the coalition's efforts over the past decade, (ii) bring together faculty, department chairs and deans from a wide variety of engineering schools to...
Chapter
Designing is different from problem solving, though to design one must solve problems. Designs are not always works of art, though designing demands the exercise of creativity. And though the artifacts of engineers and of architects stand alone, ideally expressing something akin to an organic unity, most designs are the productions of groups of ind...
Article
This paper reports two studies of the design process within engineering firms. The studies were based on participant-observation techniques: in each case the firm was approached in the way an ethnographer might approach a foreign culture. The paper presents and discusses observations of typical activities that occur in the design process. In partic...
Article
A shadow moiré interferometry technique has been developed to measure residual strain in thin silicon sheet. The curvature of a segment of sheet undergoing four-point bending is analyzed to include the applied bending moments, the in-place residual stresses, and the “end effect” of the sheet since it is of finite length. The technique is applied to...
Chapter
The current-voltage characteristics of a photovoltaic module suggest that, with the appropriate choice of number of pv cells in series, one need not include a voltage regulator to limit overcharge of the battery. This paper reports the results of an experimental and analytical study of the performance of systems with and without voltage regulation....
Article
This paper extends a method previously developed by the author for evaluating the probability of loss-of-power of stand-alone photovoltaic solar energy systems. As before, the method treats the energy capture, storage and dispersement process as a random walk in the storage domain. Correlation in day-to-day levels of solar insolation is now taken i...
Article
This paper describes an approximate approach to evaluating the performance, including the probability of loss-of-power (or loss-of-load, as some would have it) of stand-alone photovoltaic solar energy systems. The method treats the energy capture, storage and disbursement process as a random walk in the storage domain. To apply the technique, one m...
Article
Internal damping in rotating shafts can lead to dynamic instability - the unbounded growth over time of the off-axis displacement of the spinning shaft in whirl. In analyzing this phenomenon, some authors have phrased the instability criterion in terms of energies dissipated through internal and external damping. One such study has claimed that ins...
Article
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Article
The results of an analysis conducted in support of the design of a l kWh flywheel fabricated and tested recently at the MIT Lincoln Laboratory are presented. The flywheel was a prototype of a 40 kWh residential unit to be used to store energy obtained from photovoltaic arrays. The l kWh system was designed to operate between 7500 and 15,000 rpm. Th...
Article
The performance of a 100-kW-peak photovoltaic power system designed and currently under construction for the Natural Bridges National Monument, located in a remote part of Utah, is analyzed based on the results of a computer simulation. The simulation models a simplified representation of the stand-alone power system consisting of a solar array fie...
Conference Paper
For several years, MIT Lincoln Laboratory has conducted computer simulations of the performance of photovoltaic solar energy systems in order to size system components, to define designs of potential economic feasibility, to test various control schemes, and to monitor the performance of working systems in the field. When used as an aid-to-design,...
Conference Paper
Design of a stand-alone photovoltaic (PV) system which includes batteries for energy storage requires not only sizing the array power output and battery storage capacity to meet the load, but also fixing the number of battery cells placed in series relative to the number of PV cells in series in order to keep the battery voltage in the neighborhood...
Chapter
Marie-Sophie Germain was born on the first of April, 1776, into a Parisian bourgeois family that had attained a comfortable level of prosperity through several generations of trade.1 Her father, Ambroise-Francois Germain, was a silk merchant who became briefly but actively engaged in politics at the beginning of the French Revolution as an elected...
Chapter
Up until this time Mademoiselle Germain had not published a thing. Then there occurred a remarkable event that established her as an author. A German scholar, Chladni, came to Paris to repeat his intriguing experiments on the vibration of elastic plates. They caused a sensation. Napoleon, before whom they were performed, took a lively interest in t...
Chapter
After Poisson read his 1814 memoir he had every reason to expect the prize would be retired. It had been established with him in mind and he had finally realized Laplace’s expectation of him. It had taken longer than anticipated and he had needed help, but still he had completed an analysis. The help had come first of all by chance from Lagrange. S...
Chapter
In 1816, Sophie Germain found herself in a new position. She had spent five years in almost single-minded concentration on the plate problem and had been awarded the prix extraordinaire. On the one hand, this gave her a sense of professional standing, authority, and self-esteem. She had been the one — for a while the only one — doing fruitful work...
Chapter
In her last years, Sophie Germain became ill with cancer. No longer able to engage in mathematical studies with her previous energy and persistence, she turned to more general cultural questions.
Chapter
Entries for the third competition were due at the beginning of October, 1815. During the session of the First Class on 1 August, 1814, however, Poisson began reading a memoir in the following way: The efforts of mathematicians of the last century have brought the science of mechanics to a level of perfection that has given rise to the opinion that...
Chapter
After the publication in 1789 of Legendre’s work on the Théorie des Nombres, she embarked on a study of this theory with an unwavering enthusiasm. When Gauss’ Disquisitiones Arithmeticae appeared in 1801, she was amazed by the originality of this famous Göttingen professor’s work and experienced another incentive to engage in this kind of analysis....
Chapter
The first new name associated with elasticity was that of Fourier. An 1818 note shows how a solution to the plate equation could be obtained through an approach uniquely associated with his name: through the representation of plate motion in the form of a summation over the trigonometric functions, sine and cosine. His focus was on solution techniq...
Chapter
The exchange of letters between Gauss and Sophie Germain can stand apart from personal, social, or political circumstances. It made very little difference whether Gauss was responding to a letter from LeBlanc or Germain; what mattered was that he could speak of number theory to another interested mathematician, one who was at least able to understa...
Article
Variations in the current-voltage characteristics of photovoltaic cells can lead to significant power loss 'due to mismatch' when the cells are connected together in a network. This study explores how this mismatch loss depends on variations in max-power current and max-power voltage from cell to cell. An analysis of a series string is first perfor...
Article
A photovoltaic solar energy system has been providing power for irrigation and crop drying at an agricultural field station of the University of Nebraska. The system, developed and maintained jointly by MIT/Lincoln Laboratory and the University and under contract to the U.S. Department of Energy, consists of a 25 kWp PV array, a battery subsystem,...
Article
This paper discusses two of the eleven experimental PV systems which MIT/Lincoln Laboratory currently has underway for the U. S. Department of Energy: the 25 kW agricultural PV test system at Mead, Nebraska, and the 15 kW PV power system for Radio Station WBNO at Bryan, Ohio. Areas requiring further study in order to improve presently available PV...
Conference Paper
A 25 peak kW photovoltaic power system, presently the world's largest, has been installed at the University of Nebraska's Agricultural Research Station in Mead, Nebraska. The project goals include the collection of data on solar insolation, photovoltaic (PV) array performance, power conditioning equipment performance, and weather. A comprehensive s...
Article
A 100 kw peak photovoltaic (PV) power system for the Natural Bridges National Monument (NBNM) in southeastern Utah scheduled to become operational in mid-1979, will convert sunlight into dc electrical power, store all or part of the accumulated energy in a large battery bank, and supply ac power to the NBNM site through the use of a main inverter....
Article
Second-order statistics of nonstationary processes in the form of time dependent spectra are studied with emphasis on "instantaneous" and "evolutionary" spectral densities. An integrated procedure for the time dependent spectral response calculation for linear systems with digital analysis of input data is presented for excitation processes in the...
Article
Various techniques are currently used to simulate a shock environment. The authors investigate the validity of simulating the shock environment due to a pyrotechnic firing by means of a nonstationary transient formed by modulating a stationary broad band random signal with an exponentially decaying pulse.
Article
Two techniques to predict satellite boost phase inertia loads are evaluated. The first is a straightforward application of Fourier transforms. The input data are known spectra of the booster/payload interface accelerations and forecast payload transfer functions, based on anticipated payload dimensions, mass distribution, and important modes, frequ...
Article
The mean-square response of a lightly damped, second-order system to a type of nonstationary random excitation is determined. The forcing function on the system is taken in the form of a product of a well-defined, slowly varying envelope function and a noise function. The latter is assumed to be white or correlated as a narrow band process. Taking...
Article
Two of the eleven experimental PV systems which MIT/Lincoln Laboratory currently has underway for the US Department of Energy are discussed: the 25 kW agricultural PV test system at Mead, Nebraska, and the 15 kW PV power system for Radio Station WBNO at Bryan, Ohio. The radio station power system is under construction and turn-on is expected in lat...
Article
Full-text available
As 'designing' is a diverse phenomenon, but design processes have many important features in common with some other design processes, we can gain insights into how and why designers do what they do by making cross-domain comparisons. In this paper we propose a research programme for design studies: systematising these insights by using comparisons...
Article
This course introduces students to the fundamental principles and methods of structural mechanics. Topics covered include: static equilibrium, force resultants, support conditions, analysis of determinate planar structures (beams, trusses, frames), stresses and strains in structural elements, states of stress (shear, bending, torsion), statically i...
Article
Based on a talk given at CEPHAD 2010: The Borderland Between Philosophy and Design Research, a Conference at the Danish Design School, Copenhagen, January, 2010. Peter Kroes et al (The Empirical Turn in the Philosophy of Technology, P. Kroes & A. Meijers, (eds.) JAI, 20009 )frame the challenge of engineering design as bridging the divide between fu...
Article
The stability of a radially constrained, complete, circular ring subjected to thermal stress and of a similarly restrained portion of a circular ring under circumferential end load is investigated. The effect of three types of initial geometric imperfections on the buckling behavior is determined. Results obtained, employing shallow arch approximat...

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